Lump charcoal
Irregular carbonised wood pieces. Lights in 10–15 minutes, reaches a high peak heat, and stays usable for roughly 30 minutes before it needs topping up.
Home charcoal grilling
Charcoal grilling is a form of cooking that applies significant direct, radiant heat to the surface of food, so meat and vegetables cook quickly. Getting it right comes down to three things: the fuel you choose, how you build the fire, and the mistakes you avoid in the first ten minutes.
01
Charcoal is carbon-rich residue left after wood is heated in minimal oxygen. Briquettes are pressed fuel that may include additives such as coal. The choice sets your heat ceiling and burn length before you even light the fire.
02
Light in a chimney, wait for grey ash, arrange into direct and indirect zones, then test the grate with your hand. Each step has a real duration: 15–20 minutes to ash over, 30–40 minutes of stable heat.
03
Grilling applies direct radiant heat, so surface colour and internal temperature move at different speeds. Sear over the coals, finish away from them, and keep the grate uncrowded so radiant heat reaches every piece.
Charcoal is wood that has been heated in minimal oxygen until only carbon-rich residue remains.
In the traditional pyrolysis process called charcoal burning, the heat is supplied by burning part of the starting material itself with a limited supply of oxygen. Water and volatile constituents leave, and what stays behind is a lightweight black residue made of carbon.
That production route matters at the grill, because the volatiles are exactly what create sharp, bitter smoke. Well-made charcoal has already lost most of them; under-burned fuel still carries them, and they end up on your food.
Briquettes take a different path. They are pressed and shaped, and modern charcoal briquettes used for outdoor cooking may contain many other additives, for example coal. Those additives change ignition time, peak heat, and ash volume.
Irregular carbonised wood pieces. Lights in 10–15 minutes, reaches a high peak heat, and stays usable for roughly 30 minutes before it needs topping up.
Uniform pressed pieces. Light in 15–20 minutes, hold a steadier temperature, and burn longer. Check the bag for additives such as coal.
A metal tube that lights a full load of fuel from below without lighter fluid. One load is the standard starting amount for a 57 cm kettle.
Hold your palm 10 cm above the grate. 2–3 seconds is searing heat, 5–6 seconds is moderate, longer means the fire is not ready.
Move thick cuts off the coals after the sear so the centre reaches temperature without the surface burning.
Caused by putting food on before the fuel is ashed over. The volatiles that should have burned off end up deposited on the surface.
The fire is ready when the top of the fuel is grey and there is no visible flame — everything before that is volatiles burning off, not cooking heat.
| Fuel type | Ignition time | Peak heat | Usable burn | Ash volume | Best for |
|---|---|---|---|---|---|
| Lump charcoal | 10–15 min | High | About 30 min | Low | Searing, quick cooks |
| Briquettes (wood only) | 15–20 min | Medium-high | 40–60 min | Medium | Steady indirect cooking |
| Briquettes with coal additives | 15–20 min | Medium | 45–70 min | High | Long low-and-slow sessions |
| Mixed load in one chimney | Uneven | Unpredictable | Uneven | Variable | Not recommended |
| Chimney load, 57 cm kettle | — | — | 30–40 min stable | — | Baseline starting amount |
| Top-up during cook | — | — | Adds 20–30 min | — | Before the next batch, not mid-sear |
Sources are limited to public reference entries on charcoal and grilling; no brand, retailer, or manufacturer material was used.