How to light a charcoal barbecue: wait for grey ash

The sausages are still in the kitchen and the charcoal is a black pile that will not catch. How to light a charcoal barbecue is a short outdoor sequence: cold fuel, a recognised lighter, a clear air path, then a wait until the coals wear a coat of grey ash. Petrol and paraffin stay out of that sequence, and so does a second splash of lighter fluid once anything is burning.

In short

Stand the barbecue outdoors on a stable base, open the air supply, and light cold charcoal with a firelighter or a chimney starter. Keep a general depth of about 5 cm unless the manual's weight limit is reached sooner. Put food on only when the coals are covered in grey ash. Leave petrol and paraffin unused, and never pour accelerant onto coals that are already alight.

Set the barbecue down before you strike a match

Choose the spot before you open the bag. The barbecue stays outdoors while you light it, while you cook, and while the coals cool. BBC Good Food's lighting guidance says a barbecue does not belong on a balcony. Use a level patio or a firm patch of garden, and a stand that stays steady once the bowl is loaded. If the ground slopes, move the barbecue while it is still cold.

Empty yesterday's ash only when the pan is cold. Mid and West Wales Fire and Rescue Service warns against putting hot ash in a wheelie bin. That job is covered in when barbecue ash is safe to move. Cold ash left packed in the pan also blocks the draught a new fire needs.

A garage, porch or kitchen is the wrong place to get the fire going. Once charcoal is burning, leave the barbecue where it stands, and keep children and pets outside the working space.

Match the next steps to the shape you own. An open stainless-steel pedestal barbecue has a column vent and no lid. A Weber charcoal barbecue with a kettle lid comes off for lighting and goes back on when you cook. Both still light outdoors, on a base that will not tip.

How much charcoal to use

GOV.UK's outdoor fire-safety guidance gives a general bed of about 5 cm of charcoal. Mid and West Wales Fire and Rescue Service states the same depth as 50 mm. Use that as the starting depth for cold fuel, and stop earlier if your manual's weight limit arrives first. Depth and weight are separate limits. The lower one is the stop.

A manufacturer's maximum can come first. Tepro's Vista is limited to 3.2 kg. One small-column manual, IAN 538011_2507, stops at 1.0 kg. In a wide kettle, 5 cm may sit under the weight cap. In a narrow pedestal, that depth can already be more fuel than the column is built to hold. The Tepro charcoal barbecue notes show why a column manual can set a kilogram cap a kettle owner never meets.

Spread the cold charcoal so the firelighter can breathe. Two or three recognised lighters under a loose mound, or one chimney filled for this meal, beat a dense pile with the lighter buried at the bottom. A buried lighter smoulders and dies.

Firelighters, chimneys, and what is banned

GOV.UK allows recognised lighters on cold coals only, and it rules out petrol and paraffin. Mid and West Wales Fire and Rescue Service repeats the petrol ban. BBC Good Food tells cooks to skip lighter fluid, and never to pour accelerant onto a barbecue that is already alight. A flare can run back along the stream to the bottle. If only half the bed has caught, give it air and time.

A chimney keeps that light contained. Put a recognised lighter under it, fill it with the charcoal you need, and light the lighter. Weber's UK lighting advice treats flames at the top as the sign the coals are going. Empty them into the barbecue, spread them, and wait for grey ash before food goes on.

A mound is the other method BBC Good Food describes. Place the firelighters on the charcoal grate, heap cold charcoal around them with air gaps, and light the lighters. It suits a pedestal with nowhere to stand a tall chimney.

Wood wool is the natural lighter named in BBC Good Food's charcoal review. Waxed sticks and a loose bag of wool are different products.

On amazon.co.uk, The Firewood Hub's 500-piece box of wood-and-wax firelighters was listed at about £9.49, with a seller claim of a burn up to 10 minutes and 4.7 from 169 reviews. Treat the burn time as the listing's claim. Compare wood wool firelighters by pack size. A qualifying purchase through our links can earn us a commission, at no extra cost to you.

Newspaper appears only as a BBC fallback. The fire service does not give it as the method. Loose sheets blow out or burn away before the charcoal catches. If you are stuck once, trap a twist under a chimney, then use a solid lighter next time.

Open the vents: a lid is a different control

Air has to reach the charcoal, or the lighters flame and die. On a pedestal there is often no lid. Tepro's Vista instructions say to open the vent to light, then reduce it once the food is on. With the vent shut, or packed with old ash, the column cannot draw. Open it fully while the barbecue is cold, and check the holes are clear. If your manual uses different wording, follow that manual.

A kettle uses a lid and vents for different jobs. Take the lid off while the charcoal is lighting, so a young fire is not smothered and you can see whether the lighters have failed. Open the lower vent as well. The top vent matters once the lid is back on for cooking, after the coals show grey ash.

Grey ash, then food

Grey ash is the check BBC Good Food uses for coals that are ready to cook over. Look for a coat on the pieces you can see, including the sides. A pale speck on two lumps, with a black flaming centre, means the bed is still lighting. A visible firelighter flame means the starter has not finished. Food put on then picks up the lighter and sits over a bed that is still rearranging.

Chimney flames and grey ash answer different questions. Flames at the top, in Weber's UK account, mean the coals in the chimney are going. Grey ash, after those coals are in the barbecue, means you may cook. No public figure used here gives one minute count for every bag and every breeze. If the coals are still black, the food waits.

A lighting sequence you can repeat

Use the same order each time. It suits a kettle with the lid off and a pedestal with the column vent open, using cold charcoal and a recognised lighter.

1. Stand the barbecue outdoors on a stable base, off a balcony, and empty the ash pan only if it is already cold.
2. Open the vent fully, and take the lid off if the barbecue has one.
3. Add cold charcoal to about 5 cm, or stop at the manual's weight limit if you reach it first.
4. Set firelighters in the mound, or a lighter under a chimney, and light them while the fuel is still cold.
5. Leave the fire alone. Keep petrol, paraffin and lighter fluid away, including when only part of the bed has caught.
6. With a chimney, wait for flames at the top, then pour the coals into the barbecue and spread them.
7. Wait until the coals are covered in grey ash, fit the grate, then set the vent or the lid for cooking.

If nothing catches, confirm the vent is open and the lighters were not buried. A fresh solid lighter may go next to charcoal that is still cold. Once any of the bed is burning, keep the bottle closed. These steps follow GOV.UK, BBC Good Food, Mid and West Wales Fire and Rescue Service, Weber's UK lighting notes and Tepro's Vista instructions. We have not run a laboratory fire test. Your manual wins when it sets a lower fuel weight.