9 Best Charcoal Grill with Adjustable Grate Height (November 2026)
The best charcoal grills with adjustable grate height include the Royal Gourmet CC1830S BBQ Charcoal Grill for backyard versatility, the Oklahoma Joe's Rambler Portable Tabletop Charcoal Grill for portable height control, and the BIG HORN Santa Maria Grill for open-fire cooking.
On this page (4 sections)
The best charcoal grill with adjustable grate height for most backyard cooks is the Royal Gourmet CC1830S. Its two-level charcoal pan changes the distance between food and coals, while its 824 sq. in. total cooking area supports grilling, warming and smoking.
That size suits a household cooking more than a few burgers at a time. The main grates handle direct cooking, the warming rack keeps finished food warm, and the offset smoker suits slower smoke focused meals.
You do not move the food grate itself. Instead, you raise or lower the charcoal pan to change how close the fuel sits below the grates.
That approach suits a lidded barrel layout and keeps the setup familiar for charcoal cooks. Choose the Oklahoma Joe's Rambler if you need height control in a portable tabletop grill.
For open-fire cooking, the BIG HORN and Backyard Discovery Santa Maria models move the cooking grates for more direct control. That method feels more hands on, especially when you adjust heat during the cook.
A lidded barrel grill may suit cooks who prefer an enclosed area and a steadier routine. If you are comparing fuel types, our guide to Is Charcoal Or Gas Grill Better? explains the main trade-offs.
You can also compare this category with our Best Charcoal Grill guide.
Think about where the grill will live before you narrow the choice. Match your group size, cooking style and available space, not only the longest list of features.
Our picks at a glance
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1
Best for backyard versatilityRoyal Gourmet CC1830S BBQ Charcoal Grill
9.7/10 our score
See it on Amazon -
2
Best for portable height controlOklahoma Joe's Rambler Portable Tabletop Charcoal Grill
9.6/10 our score
See it on Amazon -
3
- 4
Best for light travelCheck it - 5
Check itGRILLBOSS Grill Boss Charcoal Barrel Grill
Best for cast-iron barrel grilling - 6
Check itRoyal Gourmet CC1830V 30 Barrel Charcoal Grill
Best for simple two-level control - 7
Check itBackyard Discovery Argentine Santa Maria Wood Fire
Best for wide Santa Maria range - 8
Check itStanbroil Park Style Charcoal Grill with Adjustable
Best for park-style installation - 9
Check itCaptiva Designs Charcoal Grills Extra Large Barbecue
Best for two-zone family cooking
The best charcoal grill with adjustable grate height for each cooking style
The best choice depends on how you want to control heat.
Barrel grills usually move the charcoal pan, while Santa Maria grills move the food grate above an open fire.
That difference shapes how you cook day to day.
With a moving pan, the grates and lid stay in place and the fuel position changes.
With a moving grate, the food rises or lowers above a fire that stays in one place.
Both methods change the distance between food and heat.
The moving grate method can feel more direct when you want to watch food move closer to strong heat for searing.
The moving pan method can feel tidier in a lidded grill, where the lid, thermometer and grate layout stay familiar.
Our score weighs specs, features and buyer feedback against the needs of someone shopping for adjustable cooking height.
We compared cooking space, height control, portability, cleanup features and the type of outdoor cooking each grill supports.
Cooking space matters because a small grate can limit how many items you cook at once.
Height control matters because the range of positions affects whether you can sear, cook gently and keep food warm.
Portability matters when the grill will move between a patio, campsite or tailgate.
Cleanup features matter because ash and stuck food shape how often you will want to use the grill.
The type of outdoor cooking also matters.
A grill built for an open fire asks for a different routine than a lidded barrel grill built for more enclosed cooking.
Use the sections below to match those practical points to the way you actually cook.
| Product | Best for | Cooking space | Adjustable heat area | Configuration | Our score |
|---|---|---|---|---|---|
| Royal Gourmet CC1830S BBQ Charcoal Grill | backyard versatility | 824 sq. in. total | Two-level charcoal pan | Charcoal grill with offset smoker | 9.7 |
| Oklahoma Joe's Rambler Portable Tabletop Charcoal Grill | portable height control | 218 sq. in. | Portable tabletop grill | 9.6 | |
| BIG HORN Santa Maria Grill | open-fire cooking | 621 sq. in. | Santa Maria-style grill | 9.2 | |
| Cuisinart Charcoal Grill | light travel | 196 sq. in. | Portable tabletop grill | 9.0 | |
| GRILLBOSS Grill Boss Charcoal Barrel Grill | cast-iron barrel grilling | Barrel grill with warming rack | 8.9 | ||
| Royal Gourmet CC1830V 30 Barrel Charcoal Grill | simple two-level control | 627 sq. in. total | Two charcoal-pan heights | Barrel charcoal grill | 8.7 |
| Backyard Discovery Argentine Santa Maria Wood Fire | wide Santa Maria range | 723 sq. in. | Gaucho-style vertical grilling | 8.5 | |
| Stanbroil Park Style Charcoal Grill with Adjustable | park-style installation | 224 sq. in. | 8.3 | ||
| Captiva Designs Charcoal Grills Extra Large Barbecue | two-zone family cooking | 794 sq. in. total | Dual-level charcoal grill | 8.0 |
1. Royal Gourmet CC1830S: best for backyard versatility
Royal Gourmet CC1830S BBQ Charcoal Grill: Best for backyard versatility
- 824 sq. in. total cooking space
- Two-level height-adjustable charcoal pan
- 475.3 sq. in. cooking grates
- 197.3 sq. in. offset smoker
The adjustable charcoal pan gives you two height settings for changing the distance between food and coals. Its grill, warming rack and attached offset smoker cover everyday grilling and smoking.
Pros
- Largest total cooking area here
- Attached offset smoker
- Lid thermometer
Cons
- 45.2 lb outdoor cart grill
- Requires user assembly
The Royal Gourmet CC1830S is the strongest all-around pick because it combines a large cooking area with adjustable charcoal height and an attached offset smoker. Its total area is 824 sq. in., including 475.3 sq. in. of porcelain-enameled steel wire cooking grates, a 151 sq. in. chrome-plated warming rack and a 197.3 sq. in. offset smoker.
The two-level height-adjustable charcoal pan changes the distance between food and heat. That gives you a simple way to use stronger direct heat for searing or more space for slower cooking.
The attached smoker adds a separate area for smoke-focused cooking. A side door helps you add charcoal and remove ashes, while the lid thermometer helps you track the cooking temperature.
Front and side tables give you room for seasonings and tools. The bottom shelf holds up to 20 lb of accessories when weight is spread evenly.
This is a good fit if you want one grill for family meals, smoking and standard charcoal cooking. It is less suited to buyers who need a lightweight travel grill.
2. Oklahoma Joe's Rambler: best for portable height control
Oklahoma Joe's Rambler Portable Tabletop Charcoal Grill: Best for portable height control
- 218 sq. in. cooking space
- Height-adjustable charcoal tray
- Heavy-duty steel construction
- Cast-iron grates
The Rambler brings a height-adjustable charcoal tray to a compact tabletop design. Its 218 sq. in. cooking area suits smaller gatherings, camping and tailgates.
Pros
- Adjustable tray in a portable grill
- Cast-iron grates
- Removable ash pan
Cons
- Smaller cooking area
- 48.5 lb portable grill
The Oklahoma Joe's Rambler is the best portable option because its height-adjustable charcoal tray fits a tabletop format.
The 218 sq. in. cooking area suits up to 6 burgers, 6 steaks or 12 bratwursts. That capacity fits a small gathering or family meal without a large backyard footprint.
Its heavy-duty steel construction and cast-iron grates give the compact grill a sturdy setup. The thick grates retain heat for searing, while the built-in temperature gauge helps you monitor the fire.
Cast iron holds heat well once warmed, which helps when food first cools the grate surface. The tray moves higher or lower, so you can choose stronger heat for searing or more distance for slower cooking.
That adjustment gives the Rambler a wider range than a fixed tabletop grill. You can keep the fire closer for a strong sear or create more distance for gentler cooking.
A removable ash pan makes cleanup easier after the grill cools. Removing the pan keeps ash handling separate from the cooking area and helps you clear the grill before storage.
Side handles help with carrying, and the lid handle has a rubber grip. The included assembly guide, grill and user manual support setup.
A rubber grip can help with handling when the lid is hot. Its 218 sq. in. surface is not right for large parties, and at 48.5 lb, portable does not mean weightless.
This grill suits camping, tailgates and backyard tables where compact charcoal grilling with height control is the main goal.
3. BIG HORN Santa Maria Grill: best for open-fire cooking
BIG HORN Santa Maria Grill: Best for open-fire cooking
- 621 sq. in. cooking surface
- 3-tier cooking system
- Height-adjustable grate
- 360-degree rotating upper grates
The BIG HORN uses grate height to change heat intensity over an open fire. Three cooking levels and rotating upper grates suit cooks who want several zones at once.
Pros
- Direct height adjustment
- Rotating upper grates
- Rotisserie kit included
Cons
- Open-fire design needs active fire management
- Free-standing setup
The BIG HORN Santa Maria Grill is the best pick for cooks who want direct grate-height control over an open charcoal or hardwood fire. Its vertical lift system raises or lowers the grate by turning a handle.
The grill has a 621 sq. in. cooking surface and a 3-tier cooking system. A main grate and two independent 360-degree rotating upper grates let you grill, sear and keep food warm at different levels.
Its deep fire bowl supports charcoal and hardwood. The open design makes fire management part of the cooking process, so it suits people who enjoy working directly with the fire.
Dual solid wood side tables add prep space. The included rotisserie kit expands the cooking options without changing the basic open-fire setup.
Choose it for Santa Maria-style meals, rotating upper grates and a portable design with tool-free assembly. It needs more active attention than a lidded barrel grill.
4. Cuisinart Charcoal Grill: best for light travel
Cuisinart Charcoal Grill: Best for light travel
- 196 sq. in. cooking surface
- 14 in. portable design
- Dual adjustable vents
- Three lid locks
The Cuisinart is the lightest, simplest travel pick in this group. It uses dual vents rather than an adjustable grate, so choose it when portability matters more than changing grate height.
Pros
- Compact 14 in. design
- Dual vents
- Enamel-coated firebox
Cons
- No adjustable cooking-height grate
- Smallest cooking surface here
The Cuisinart Charcoal Grill is the lightest travel pick in this roundup, with a 14 in. portable design and a 196 sq. in. cooking surface.
It is useful for camping, tailgating and small outdoor spaces.
The compact size helps when storage space is tight or when the grill will travel in a car.
This model does not have an adjustable grate or charcoal pan.
Instead, its dual adjustable vents manage airflow for low-and-slow or high-heat cooking.
That means heat control comes from air flow rather than changing the distance between food and coals.
Vents can suit simple cooks who are happy to manage a fire with air flow and charcoal amount.
The chrome-plated grate resists rust and is designed for quick cleaning.
An enamel-coated firebox and ash base help manage cleanup after cooking.
Those surfaces can make ash removal and wiping down simpler than with a plain finish.
Three lid locks keep the grill closed during transport.
That makes it a practical choice when a compact body matters more than adjustable cooking height.
The locking lid can help keep ash and parts contained when the grill is moved after it cools.
Pick this grill if you want simple charcoal cooking in a small package.
If changing the distance between food and coals is your main goal, choose the Oklahoma Joe's Rambler or Stanbroil instead.
The Cuisinart is best treated as a vent controlled travel grill.
It suits cooks who value light weight, simple setup and easy storage over multiple grate heights.
5. GRILLBOSS Grill Boss Charcoal Barrel Grill: best for cast-iron grilling
GRILLBOSS Grill Boss Charcoal Barrel Grill: Best for cast-iron barrel grilling
- Adjustable cast-iron grate
- 23 in. barrel grill
- Warming rack
- Built-in temperature gauge
The GRILLBOSS combines an adjustable cast-iron grate with a barrel shape, warming rack, side shelf and wheels. It fits cooks who want height control in a full-size backyard grill.
Pros
- Adjustable cast-iron cooking grate
- Warming rack
- Wheels and storage shelf
Cons
- Cooking surface area is not stated
- Painted steel lid
The GRILLBOSS Grill Boss Charcoal Barrel Grill gives you an adjustable cast-iron grate in a full-size barrel design.
The adjustable grate helps you change heat control for different foods.
Raising or lowering the grate changes the distance between food and charcoal without changing the fuel itself.
That can help when you want stronger heat for searing or more distance for slower cooking.
Its cast-iron grates are paired with a painted steel-hinged lid.
A warming rack adds another cooking level, while the built-in temperature gauge helps you track the heat inside the grill.
The warming rack creates a place to hold food away from the main cooking area.
That can help during a meal when items finish at different times.
The fixed side shelf gives you prep space, and the bottom shelf holds accessories.
Wheels make it easier to move around the outdoor cooking area.
Wheels help with short moves on a patio, though the grill still needs a stable spot while cooking.
The cooking surface area is not stated, so check the available footprint and layout before choosing it for large gatherings.
That missing detail matters because a large footprint does not always mean a large usable cooking surface.
Measure the space where it will sit and think about how many items you usually cook at once.
The design is best for a backyard cook who wants cast iron and adjustable grate height in one cart grill.
It suits a fixed outdoor cooking area where wheels are useful for placement rather than travel.
6. Royal Gourmet CC1830V: best for simple two-level control
Royal Gourmet CC1830V 30 Barrel Charcoal Grill: Best for simple two-level control
- 627 sq. in. total cooking space
- Two charcoal-pan height settings
- 443 sq. in. cooking grates
- 184 sq. in. warming rack
The CC1830V gives you two charcoal-pan heights and enough room for larger backyard meals. Its adjustable fire grate also serves as an ash pan for cleanup.
Pros
- 627 sq. in. total space
- Lid-mounted temperature gauge
- Adjustable fire grate
Cons
- Only two pan heights
- Free-standing outdoor grill
The Royal Gourmet CC1830V is a good match for cooks who want a large barrel grill with straightforward two-level heat control. Its charcoal pan raises or lowers to 2 heights, changing the distance between fuel and food.
The grill provides 627 sq. in. total cooking space, with 443 sq. in. of porcelain-enameled steel wire cooking grates and a 184 sq. in. chrome-plated steel wire warming rack.
A lid-mounted gauge helps you monitor temperature changes. The adjustable fire grate also works as an ash pan, which makes it easier to dump ash after cooking.
The side and front tables give you workspace for tools and food. Its free-standing barrel layout suits patios, decks and backyard gatherings where a larger cooking surface is useful.
Choose it when two charcoal-pan positions are enough for your cooking style. If you want a wider height range, look at the Santa Maria models.
7. Backyard Discovery Argentine Santa Maria: best for wide Santa Maria range
Backyard Discovery Argentine Santa Maria Wood Fire: Best for wide Santa Maria range
- 723 sq. in. grilling surface
- Grates adjust from 2 to 24 in.
- Wood and charcoal cooking
- 4 stainless steel S-hooks
This Santa Maria grill offers the widest stated height range here, from 2 to 24 in. It suits open-fire cooks who want a large cooking surface and vertical grilling with S-hooks.
Pros
- 2 to 24 in. grate adjustment
- 723 sq. in. cooking surface
- Fire bricks and ceramic fire-insulated side walls
Cons
- 374.8 lb grill
- Very large footprint
The Backyard Discovery Argentine Santa Maria grill offers the widest stated grate-height range in this group. Its grates adjust from 2 to 24 in., giving you a large spread between close searing heat and higher slow-cooking positions.
The grill has a 723 sq. in. cooking surface and supports wood and charcoal. Its 304 stainless steel grill grate frame and brasero firebox support the open-fire design.
Four stainless steel S-hooks allow gaucho-style vertical grilling. Fire bricks and ceramic fire-insulated side walls help retain and distribute heat around the cooking area.
An acacia wood side table and handles add prep space and handling points. The included coal shovel helps tend the fire, and the included cover protects the grill from outdoor conditions.
At 374.8 lb, this is a substantial fixed outdoor grill rather than a casual portable choice. Pick it when broad height adjustment, open-fire cooking and a large cooking area matter more than easy movement.
8. Stanbroil Park Style Charcoal Grill: best for park-style installation
Stanbroil Park Style Charcoal Grill with Adjustable: Best for park-style installation
- 224 sq. in. cooking surface
- 4 adjustable cooking levels
- Stainless steel grate
- 3 installation options
The Stanbroil gives you four cooking levels in a compact park-style format. Its three installation options make it useful for a backyard, park setting or fixed outdoor cooking area.
Pros
- Four height levels
- Stainless steel cooking grate
- Three installation options
Cons
- Smaller cooking surface
- Installation choice affects placement
The Stanbroil Park Style Charcoal Grill suits buyers who want a compact fixed grill with four adjustable cooking levels. Its 224 sq. in. stainless steel cooking grate provides a manageable surface for smaller meals.
The four height settings let you change the distance between food and charcoal. This gives you more position choices than the two-level charcoal pans on several barrel grills.
You can install it with a wall mount and bracket, a stand-up base anchor or a ground insert with extension post. All mounting parts are included, so choose the setup that fits your outdoor location.
The heavy-gauge coated steel body includes a firebox and ash catch box. Its vertical stack configuration works well where a fixed park-style grill is more useful than a wheeled cart.
Choose it for a small cooking area and multiple installation options. Measure the intended mounting or anchoring space before setup.
9. Captiva Designs Charcoal Grill: best for two-zone family cooking
Captiva Designs Charcoal Grills Extra Large Barbecue: Best for two-zone family cooking
- 794 sq. in. total cooking space
- Two independently liftable charcoal trays
- Two foldable side tables
- Enamel grates
The Captiva Designs uses two independently liftable trays to create separate heat zones. Its large cooking area and foldable tables suit family meals and larger outdoor gatherings.
Pros
- Independent tray adjustment
- 794 sq. in. total space
- Foldable side tables
Cons
- 88 lb grill
- Height control comes from trays, not the grates
The Captiva Designs charcoal grill is the best fit for cooks who want two adjustable heat zones across a large cooking surface. Its two charcoal trays lift independently, so you can set different distances from the food on each side.
The grill has 794 sq. in. total cooking space, including a 505 sq. in. primary grate and a 289 sq. in. warming rack. That gives you room to cook different foods at the same time.
The enamel grates and charcoal trays handle high heat and are designed for easier cleanup. A chrome-plated warming rack holds food away from the primary heat.
Two foldable side tables provide room for tools, plates and sauces. When folded, they make the grill more compact for storage and transport.
Choose it for family meals, separate heat zones and a large backyard cooking area. It is 88 lb, so plan where it will stay before assembling it.
How to choose adjustable charcoal grate height
Adjustable height matters most when you cook foods that need different heat levels. A grate close to the coals can sear quickly, while a higher position gives you more time to cook thicker food without placing it directly over intense heat.
Should you choose a moving grate or moving charcoal pan?
Choose a moving grate when you want to raise or lower the food itself, as with the BIG HORN, Backyard Discovery and Stanbroil models. Choose a moving charcoal pan when you prefer to change the fuel position beneath a mostly fixed cooking surface, as with the Royal Gourmet and Captiva Designs grills.
A moving grate can make open-fire cooking feel direct and visual. A moving pan may fit a lidded barrel grill better because the lid, thermometer and cooking layout stay familiar.
How much cooking space do you need?
A surface under about 250 sq. in. fits smaller meals and portable use. The Cuisinart, Oklahoma Joe's and Stanbroil models are the compact choices here.
For larger family meals, look at the 600 to 824 sq. in. options. The Royal Gourmet CC1830S has the largest total area in this roundup, while the Captiva Designs combines 794 sq. in. with two independent charcoal trays.
Is a Santa Maria grill right for your patio?
A Santa Maria grill fits cooks who enjoy open-fire cooking and want to control heat by lifting or lowering the grate.
It needs a safe outdoor location, active fire management and enough room around the cooking area. The open design makes the fire part of cooking, so you may need to tend coals, add fuel and watch how heat changes.
That hands on routine suits cooks who like direct control. It may feel less suited to someone who wants a simple lidded routine with fewer adjustments.
A Santa Maria grill also asks for space. The open fire needs clearance from walls and fences, and prep space matters since you work near the fire with food and tools.
For a more familiar lidded design, compare our guide to best stainless steel charcoal grills. If you are weighing fuel choice, Which Is Better Gas Grill or Charcoal Grill Which Is Better? covers the cooking and care differences.
A lidded barrel grill suits cooks who want height control without giving up a covered area. A closed lid can also help with heat control and keep the cooking area contained.
Choose based on routine as much as features. If you enjoy open fire cooking, a Santa Maria model may fit, while a standard barrel layout with a lid and thermometer may fit better if you prefer a moving charcoal pan.
How to use adjustable grate height safely
Start with a stable outdoor setup away from flammable materials. Build the charcoal fire according to the grill instructions, let the grate or pan mechanism settle, and use heat-resistant tools when changing height.
A stable setup matters because raising a grate or moving a pan should not wobble the grill. Check that the grill sits on level ground and that handles, shelves and wheels are clear of the heat area.
Build the fire in the area meant for charcoal and give the coals time to reach the heat you want. Let the mechanism settle before food goes on, since a shifting grate or pan can change safe handling.
Use heat-resistant tools when changing height and keep hands, sleeves and utensils away from the hottest parts.
Keep the lid, vents and grate position working together. A lower grate or higher charcoal pan does not replace airflow control.
The built-in thermometer on models that include one only measures the area where the gauge is placed. Air flow still shapes how the fire burns and how heat moves through a lidded grill.
Read the thermometer as a guide for the area near the gauge, not as a full map of the cooking surface. Food near the coals can run hotter than food at the far end, even when the gauge looks steady.
Let the grill cool fully before handling ash or deep-cleaning the grate. Cooling fully also makes cleaning safer without steam or flare ups from water.
Remove ash once the grill is cool so the next fire starts with a clear base. Store the grill in a dry spot and check moving parts now and then.
Which charcoal grill with adjustable grate height should you buy?
The Royal Gourmet CC1830S is the best charcoal grill with adjustable grate height for most backyard cooks because it combines 824 sq. in. of total space, a two-level charcoal pan and an offset smoker.
That mix suits a cook who wants one grill for everyday charcoal cooking, warming and smoke focused meals. The large total area helps with family meals and mixed foods that need different positions.
The two-level pan changes heat distance without moving the main grates. Pick the Oklahoma Joe's Rambler for portable height control, the BIG HORN for open-fire cooking or the Backyard Discovery model for a 2 to 24 in.
Santa Maria range.
Those picks differ mainly in how height is controlled and where the grill will be used. The Rambler suits tabletop cooking and travel when a smaller surface is enough.
The BIG HORN suits open fire cooking with rotating upper grates and a hands on routine. The Backyard Discovery suits a fixed outdoor spot where a wide height range and large surface matter more than easy movement.
Choose the Captiva Designs when independent two-zone control matters more than moving the food grate itself. Its two liftable trays set different heat positions on each side.
That can help when one food needs stronger heat and another needs gentler cooking. The GRILLBOSS suits a backyard cart grill with an adjustable cast-iron grate and warming rack.
The Stanbroil suits a compact fixed setup with four levels and three installation options. The Cuisinart suits light travel with vent control rather than height control.
Use your group size and cooking style as the final check. Choose the design you will actually use often, with height control that matches how you like to manage the fire.
Our top 3 picks at a glance
-
1
Best for backyard versatility
Royal Gourmet CC1830S BBQ Charcoal Grill
9.7/10 our score
See it on Amazon -
2
Best for portable height control
Oklahoma Joe's Rambler Portable Tabletop Charcoal Grill
9.6/10 our score
See it on Amazon -
3
Frequently asked questions
What does adjustable grate height do on a charcoal grill?
Adjustable grate height changes the distance between food and burning charcoal. Raise the grate for gentler cooking or lower it for stronger searing heat.
Santa Maria grills use this method directly, while barrel grills may raise or lower the charcoal pan beneath a fixed grate.
What is the best charcoal grill with adjustable grate height for most people?
The Royal Gourmet CC1830S is the best charcoal grill with adjustable grate height for most backyard cooks because it combines 824 sq. in. of total space, a two-level charcoal pan, a warming rack and an offset smoker. It suits larger meals and mixed cooking styles.
Is an adjustable charcoal pan the same as an adjustable grate?
No. An adjustable grate moves the food closer to or farther from the fire.
An adjustable charcoal pan moves the fuel instead.
Both change the heat distance, but the controls feel different and affect how you arrange food and coals.
Are Santa Maria grills good for charcoal?
Yes. Santa Maria grills are designed around open-fire cooking and height adjustment.
The BIG HORN supports charcoal and hardwood, while the Backyard Discovery model supports wood and charcoal.
They suit cooks who want direct control over heat distance.
How do you clean an adjustable charcoal grill grate?
Let the grill cool fully, remove loose ash and brush residue from the grate with a suitable grill brush. For a detailed routine, see how to clean a charcoal grill grate and how to clean charcoal grill grates.
