The short answer
To light a charcoal BBQ, fill a chimney starter with charcoal, put two scrunched sheets of newspaper or two natural firelighters underneath it, light them, and leave it alone for 15 to 20 minutes until the top coals are glowing and covered in grey ash. Tip the coals into your BBQ, banked to one side rather than spread flat, put the grill grate on, and cook. No lighter fluid, no fanning, no poking.
That is the whole thing. Everything below is the detail that stops it going wrong: how much charcoal to use, how to tell when it is actually ready, what to do if you have no chimney starter, and why your charcoal keeps going out.
What you actually need
You need less kit than the internet suggests.
The three things worth owning:
- A chimney starter. About £20. It is the single best BBQ purchase you will ever make and it removes almost every lighting problem. The tall metal cylinder creates a draught that pulls air up through the charcoal, so the coals light each other from the bottom up.
- Natural firelighters. Wood wool and wax, or the white non-paraffin blocks. They burn clean and leave no taste.
- Long tongs and heatproof gloves. Not lighting kit exactly, but you will be moving hot metal.
What to leave in the shed: lighter fluid, petrol, paraffin, white spirit, meths, and anything else flammable and liquid. Fire service and RoSPA guidance is consistent on this, and beyond the safety issue, petroleum based accelerants leave a chemical taste in food that no amount of marinade covers up. If you want to know what good fuel should smell like, read our guide to the best wood for live fire cooking in the UK.
How to light a charcoal BBQ, step by step
- Open the bottom vents. All of them, fully. Charcoal needs airflow from underneath. Most failed BBQs are strangled BBQs.
- Fill the chimney starter with charcoal. To the top for a full cook, half full for a couple of steaks.
- Put two natural firelighters or two loosely scrunched sheets of newspaper on the charcoal grate, directly under the chimney. Loose, not tight balls. Tight paper smoulders.
- Set the chimney on top and light the firelighters through the side vents. Two or three points around the base.
- Walk away for 15 to 20 minutes. Do not fan it, do not lift it, do not check it every ninety seconds. The draught does the work and interfering breaks it.
- Tip out when the top layer is glowing orange and dusted with grey ash. Not before. Coals that look black on top are not ready no matter how hot the bottom is.
- Bank the coals to one side or two thirds of the grill, leaving a clear zone with no charcoal under it. More on why in a moment.
- Put the grate on, close the lid for five minutes to burn off residue, brush it, then cook.
How long does a charcoal BBQ take to heat up?
| Method | Time to cooking temperature | Reliability |
|---|---|---|
| Chimney starter | 15 to 20 minutes | Very high |
| Electric charcoal starter (looped element) | 8 to 12 minutes | High, needs a socket |
| Firelighters in a pyramid, no chimney | 20 to 30 minutes | Moderate |
| Newspaper and kindling pyramid | 25 to 35 minutes | Moderate, depends on wind |
| Instant light charcoal (impregnated) | 10 to 15 minutes | High, taste cost |
| Blowtorch | 10 to 15 minutes | High, easy to rush it |
Add five to ten minutes in cold or damp weather. If you are cooking through the colder months, our winter BBQ guide covers what changes when the temperature drops.
The number that matters more than any of these is the ash. Grey ash on the surface of a coal means the volatile compounds have burned off and you are now cooking over clean radiant heat. Cook too early and you are cooking in smoke from unburnt fuel, which is the acrid, eye watering taste people wrongly blame on charcoal in general.
The hand test for heat, once the coals are out and banked. Hold your palm about 12cm above the grate and count:
- 2 to 3 seconds before you have to move it: high heat, roughly 230C plus. Steaks, chops, burgers.
- 4 to 6 seconds: medium, roughly 180 to 200C. Chicken thighs, sausages, vegetables.
- 8 to 10 seconds: low, under 150C. Slow roasting, finishing, resting.
How much charcoal do I need for a BBQ?
This is the question we get asked most on class days, and almost everyone either doubles or halves what they need.
| BBQ size | Direct grilling | Longer cook with a lid |
|---|---|---|
| Small portable or bucket BBQ (up to 37cm) | 0.7 to 1kg | 1 to 1.5kg |
| Standard kettle (47 to 57cm) | 1.5 to 2kg, roughly one full chimney | 2.5 to 3kg |
| Large kettle or barrel (60cm plus) | 2.5 to 3kg | 4 to 5kg |
| Kamado or ceramic | Fill the firebox, control with vents | Fill the firebox |
A rough rule for a kettle: enough charcoal to cover two thirds of the charcoal grate in a single layer about two coals deep. You are aiming for a bed, not a mountain. Big heaps look impressive and burn through your fuel in forty minutes.
Buy a 5kg bag for a family BBQ and you have fuel for two or three cooks. Buy a 2kg supermarket bag and you will run out halfway through the chicken.
No chimney starter? Three methods that still work
- The pyramid with natural firelighters. Build a cone of charcoal on the charcoal grate. Tuck two or three firelighters into the base at opposite sides. Light them. Leave the pyramid intact for 15 minutes, then spread the coals once the outer layer has ashed over. Slowest but dependable.
- The egg box method. Tear an egg box into cells, put a knob of charcoal in each, put the cells in the base of the BBQ and light the cardboard. Cheap, surprisingly effective, and it works because each cell acts as its own tiny chimney. Only paper based egg boxes, never polystyrene.
- The DIY chimney. A large empty catering tin or clean paint tin with holes punched around the base and the top and bottom removed. It is a chimney starter and it works on exactly the same principle. Handle it with gloves and tongs because it has no handle.
You can also light charcoal with a blowtorch, and it looks brilliant, but it is the method most likely to get you cooking over half lit coals because the flame makes everything look ready. If you use one, torch the coals for two minutes and then wait ten.
Why is my charcoal not lighting?
| Symptom | Likely cause | Fix |
|---|---|---|
| Firelighter burns out, charcoal stays black | Not enough fuel in contact, or no draught | Use a chimney, or pack charcoal closer around the firelighter |
| Coals light then die within ten minutes | Vents closed or ash pan full | Open all bottom vents, empty ash before every cook |
| Charcoal hisses and steams | Damp fuel | Store bags off the floor in a dry shed or a lidded bin |
| Only the middle lights | Heap too deep and too tall | Spread to a two coal deep bed after lighting |
| Everything goes out when you close the lid | Top vent closed | Top vent open, always, whenever there is fire inside |
| Lights fine in summer, fails in autumn | Cold fuel, cold metal, wind | Add ten minutes and shelter the BBQ from crosswind |
Nine times out of ten it is one of two things: the fuel is damp or the air is blocked. Charcoal is astonishingly hygroscopic. A bag left on a garage floor over a wet British winter absorbs enough moisture to behave like a completely different product.
Should you use instant light charcoal?
Honest answer, and this is not the answer the bag wants us to give: it works, and it costs you flavour.
Instant light charcoal is ordinary charcoal soaked in a lighting accelerant, usually a petroleum distillate. It ignites from a match in a couple of minutes, which is genuinely convenient. The accelerant then burns off over the following ten to fifteen minutes, and if you start cooking before it has finished burning off you get a faint solvent note in the food. Most people who have never tasted the alternative do not notice it. Everyone notices it once they have.
The other cost is control. Instant light bags are usually small briquettes designed for a short, hot, fast burn. They are poor at anything that takes longer than twenty minutes, which rules out most of the interesting cooking.
Our position: fine for a one off picnic where you have no kit. Not worth it at home, where a £20 chimney starter and a bag of proper lumpwood gets you better food for less money over a season.
Bank your coals while you light, not after
This is the bit almost every lighting guide skips, and it is the difference between a BBQ that works and a BBQ that burns sausages black outside and raw inside.
Do not spread your lit coals evenly across the whole base. Bank them to one side, or across two thirds, and leave a third of the grill with no charcoal underneath. You now have two zones:
- The direct zone, over the coals. Searing, colour, char.
- The indirect zone, with no coals underneath. Finishing, gentle cooking, and a safe place to move anything that flares up.
Every piece of food gets sear on the hot side and then finishes on the cool side. Nothing burns, nothing is raw, and you stop having to fight the fire. It costs nothing, it takes no extra time, and it is the single habit that most improves home BBQ.
The same logic scales up to open fire cooking, where you rake embers rather than moving charcoal. If you want to see how that works, our guide to building a cooking fire covers the wood fire version, and fire pit cooking covers turning a garden fire pit into a genuine outdoor kitchen.
The safety rules we enforce on every class
These are not optional and they are not scaremongering. They are the things that actually hurt people.
- Never take a charcoal BBQ indoors, into a tent, awning, caravan, shed, garage or porch. Not to cook, not to shelter from rain, and not to cool down afterwards. Charcoal produces carbon monoxide the entire time it is lit and while it is cooling, it is odourless, and it has killed campers in the UK. Cooling coals are the specific trap because they look finished.
- Never add flammable liquid to lit or warm coals. Flame travels back up the stream.
- Light on a level, non combustible surface, well away from fences, sheds, decking, overhanging branches and garden furniture.
- Keep a full watering can or a bucket of water within reach. Not a hose you would have to go and connect.
- Let coals burn out completely, then douse them and leave them in a metal container overnight before they go anywhere near a bin. BBQ related fires in wheelie bins and skips are entirely avoidable and entirely common.
- Wash your hands after handling raw meat, before you touch the tongs. Boring, and the actual reason people get ill at barbecues.
Learn it properly, in the woods, in one day
Reading about fire gets you a long way. Standing next to it with someone who cooks over it for a living gets you considerably further.
Our live fire and BBQ class experiences in Kent run from 10am to 4pm in private woodland. You light fires, you manage heat, you cook a full themed feast over flame and embers, and you eat everything you cook. Ingredients, equipment, refreshments, a take home fire cooking manual and your own apron are all included. Beginners welcome, and most people arrive having never used anything but a supermarket disposable.
Book your slot or get in touch if you want to build a custom day for a group.
Frequently asked questions
How long does it take to light a charcoal BBQ? With a chimney starter, 15 to 20 minutes from match to cooking. Without one, allow 25 to 35 minutes. Add five to ten minutes in cold or damp conditions.
Do you leave the lid on or off when lighting a charcoal BBQ? Off while the coals are lighting, so they get maximum airflow. Put the lid on for about five minutes once the coals are in place, to heat and clean the grate, then cook with the lid on or off depending on what you are making.
Can you light a charcoal BBQ without firelighters? Yes. Loosely scrunched newspaper under a chimney starter works perfectly well, as do paper egg boxes, dry kindling, or a natural wax and wood wool starter. You do not need petroleum firelighters at all.
How do you know when charcoal is ready to cook on? The coals glow orange underneath and are covered in a layer of pale grey ash. Black patches on top mean it is not ready. This usually takes 15 to 20 minutes in a chimney and is about the ash, not the clock.
Why does my charcoal keep going out? Almost always blocked airflow or damp fuel. Open every bottom vent fully, empty old ash out before you start, and store charcoal off the ground somewhere dry.
Is lumpwood or briquette charcoal better? Lumpwood lights faster, burns hotter and gives a cleaner flavour, so it suits searing and shorter cooks. Briquettes burn longer at a steadier temperature, so they suit slow cooking with the lid on. We use lumpwood for most grilling and briquettes when something needs two hours of consistent heat.
How much charcoal do I need for 10 people? On a standard 57cm kettle, 2 to 3kg is plenty for a direct grilled meal for ten. Have a second bag ready if you plan to keep cooking for more than about ninety minutes.
Can you reuse charcoal from last time? Yes, and you should. Shut all the vents when you finish to smother the coals rather than letting them burn out, then sieve out the ash next time and top up with fresh charcoal. You will typically recover a third to a half of a bag.