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How to use a kettle barbecue

Updated: 23 October 2026

The coals are in the bag and the sausages are in the fridge. This page is how to use a kettle barbecue outdoors: where it may sit, how to light charcoal without petrol, how to run a two-zone fire, and how to shut down without a bin fire. It is not a ranking of the nine kettles on the [kettle barbecue comparison](/hub/grills-and-barbecues/kettle-barbecue). Size choice belongs on the [kettle barbecue buying guide](/hub/grills-and-barbecues/kettle-barbecue/sub/kettle-barbecue-buying-guide). Peter F., DIY and tools editor, followed Weber UK lighting notes and GOV.UK outdoor fire guidance, not a timed cook-off. A qualifying purchase can earn us a commission at no extra cost to you. Updated 23 October 2026.

The coals are in the bag and the sausages are in the fridge.

Our top picks

Weber Weber Compact kettle 57 cm

Best overall

Weber Weber Compact kettle 57 cm
8.9/10about £99.99
View offer
Weber Weber Compact kettle 47 cm

Best value

Weber Weber Compact kettle 47 cm
8.9/10about £49.49
View offer
Weber Weber Original Kettle Premium 57 cm

Alternative

Weber Weber Original Kettle Premium 57 cm
8.4/10about £239.00
View offer
On this page
  1. 1.Set the kettle up outside
  2. 2.Light the charcoal
  3. 3.Direct, indirect, and the vents
  4. 4.When it will not get hot, and how to finish

Set the kettle up outside

Put the kettle on hard, level ground at garden level, with the bowl vents clear of grass and the lid able to hang or rest without tipping the stand. London Fire Brigade says not on a balcony and not on decking. GOV.UK fire safety outdoors keeps charcoal barbecues out of tents, awnings, and caravans because carbon monoxide has no smell. A BS EN 50291 alarm is a back-up, not permission to cook inside. Leave space back to fences and sheds, keep water or a fire blanket nearby, and stay with the fire for the whole burn. If the only outdoor space you have is a balcony, do not light a charcoal kettle there; the small kettle barbecue for a patio page covers that refusal. Light only once the ash pan is fitted.

Light the charcoal

Skip lighter fluid and petrol. GOV.UK says not to use petrol on a barbecue. Weber UK’s method is a chimney starter with three lighter cubes under briquettes, or a neat pyramid with cubes tucked in, then wait until the coals show a light grey coat. Lighter cubes must be used up before food goes on. Weber’s about 2 kg figure is for a 57 cm chimney load, not every 43 cm bowl, and not a reason to pass GOV.UK’s about 5 cm fire-safety depth. Open the vents at the start so air can feed the fire. On some budget kettles, including HOMION in this set, a UK review says the bottom vent only opens when the kettle is cold. Set that damper before you light. Grey coals are the start of the cook, not the moment the firelighters flame.
Weber Weber Compact kettle 57 cm

Testsieger

Weber Weber Compact kettle 57 cm
8.9/10about £99.99
View offer

Direct, indirect, and the vents

Direct heat means the food sits over the coals for shorter cooks. Weber UK treats cooks under about twenty minutes as the direct cut: burgers, sausages, thin steaks, vegetables that need a hard sear. Indirect heat means you bank the coals to one side, put the joint on the empty side, and keep the lid on so the kettle acts more like an oven. Temperature is fuel plus airflow plus the lid. Weber UK’s charcoal temperature article starts with vents open, then small adjustments, then about five minutes’ wait before the next tweak. Do not shut both vents while you are still cooking. High heat with the lid vent open sits in Weber’s starting table around 230–290°C as their guidance, not a measurement made for this page. If your kettle has a lid thermometer, use it as chamber air. If it does not, judge by the grey coat and how fast the food colours.

When it will not get hot, and how to finish

Wind can strip heat from a thin bowl; turn the lid vent to draw, and shift the kettle on its wheels only when the stand is stable and the ash tray is secure. When the food is done, close the vents to starve the fire and leave the kettle outside until it is cold. London Fire Brigade says cool before you move it, and do not bring it inside. Hot ash does not go in the wheelie bin. GOV.UK wants ashes on bare soil or in a metal container after they are cold. A thin bowl left out all winter with wet ash is the rust path many budget owners discover in spring. If anyone feels unwell after charcoal in a poorly aired space, use NHS 111 or 999. Do not use the kettle as a patio heater.

Common questions

How do I light it without lighter fluid?
Use a chimney starter or a pyramid of charcoal with lighter cubes underneath. Weber UK’s cube count for a chimney load is three. Wait for a light grey coat. Do not use petrol; GOV.UK fire guidance forbids it on barbecues.
When are the coals ready?
When they are covered with a light grey ash and the lighter cubes are gone. Shiny black briquettes with blue flame from a cube still burning are not ready for food.
How much charcoal for a 57 cm kettle?
Weber UK cites about 2 kg of Weber briquettes for a 57 cm chimney load as their figure. Scale down for a 43–47 cm bowl. Treat GOV.UK’s about 5 cm depth as a fire-safety limit, not a target to exceed for a hotter cook.
What is direct and what is indirect?
Direct: food over the coals for shorter cooks. Indirect: coals banked to one side, food on the empty side, lid on. Weber UK uses under about twenty minutes as the usual direct cut.
Which vent do I move?
Start with both open. Make one small change to the lid or bowl vent, then wait about five minutes. Do not close both while cooking. If your bottom vent only moves when cold, set it before lighting.
Why will it not get hot?
Check ash in the bowl vent, damp fuel, and closed vents first. A budget damper you cannot open hot is a product limit. Wind and a half-empty basket also keep temperatures down.
What do I do with the ash?
Leave the kettle outside until cold. Empty cold ash onto bare soil or into a metal container. Do not tip hot ash into a plastic wheelie bin.

Related pages

Best kettle barbecues

Kettle barbecue or kamado

Kettle barbecue

Kettle barbecue buying guide: diameter, enamel, vents

Small kettle barbecue for a patio: size and siting

Sources

Public UK sources on smoke control, outdoor fire safety and carbon monoxide, plus the solid-fuel barbecue standard and Weber UK. Prices, stars and review counts are the amazon.co.uk lines captured for this comparison on 21 October 2026. No row is a laboratory cook.

  1. GOV.UK — smoke control area rules (retrieved 22.10.2026)
  2. GOV.UK — nuisance smoke (retrieved 22.10.2026)
  3. GOV.UK — fire safety outdoors (retrieved 22.10.2026)
  4. GOV.UK — carbon monoxide (retrieved 22.10.2026)
  5. Public Health Wales — carbon monoxide (retrieved 22.10.2026)
  6. London Fire Brigade — barbecue safely (retrieved 22.10.2026)
  7. BS EN 1860-1:2024 — solid-fuel barbecues (retrieved 22.10.2026)
  8. Weber UK — Original Kettle 1502210 (retrieved 22.10.2026)