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onlyfire kettle kit: charcoal ring, pizza ring, 15 in stone

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If you already own a 57 cm kettle barbecue, the onlyfire kit is a way to add both a pizza oven and a rotisserie without buying another appliance. It is a ring that lifts the lid, with a 15 inch cordierite stone, a charcoal ring and an electric spit motor. It suits barbecue owners who want to try pizza first before committing to a dedicated oven.

Fuel
Charcoal (in your kettle)
Stone
15 in round cordierite
Max temp (stated)
Not stated
Fuel and ash
Charcoal ring, swivel dampers
Weight
11 kg packed

In its favour

  • The charcoal ring sets fuel round the edge, which onlyfire says browns the rim and keeps the middle tender.
  • A 15 inch cordierite stone is the largest stone in this guide.
  • Stainless dampers swivel shut to stop heat escaping.

Good to know

  • It only works on 22 inch (57 cm) kettles and not on the Weber Smokey Mountain.
  • No top temperature is stated, as heat depends on your charcoal.
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Our take

Two jobs from one ring

The listing calls it a 2 in 1 kit: use it as a rotisserie ring or a pizza ring as you prefer. The packing list includes the rotisserie kit with its electric motor, the charcoal ring, the pizza ring parts and a 15 inch round cordierite stone.

Stainless dampers on the ring swivel closed to cut heat loss, and the extra height also gives more room inside the kettle for a whole chicken or a large roast.

Setting up the charcoal for pizza

onlyfire offers a practical tip: put the charcoal around the edge of the charcoal ring. Heat then comes from the outside in, so the rim browns while the middle stays tender. No top temperature is given, so the result depends on how much charcoal you use and how you set the dampers.

A thermometer is not listed, so an infrared gun is a sensible extra for checking the stone.

Check your grill first

The kit fits 22 inch kettle grills, including Weber and similar brands. onlyfire is explicit that it is not compatible with the Weber Smokey Mountain and asks buyers to check the sizes carefully. The package weighs 11 kg according to the listing.

The motor is listed as 220 to 240 V, which matches UK mains, although the plug type is not stated.

Next to the KettlePizza and Geras

The KettlePizza Basic 22.5 is a stainless insert with a front opening, so you slide pizzas in without lifting the lid, but the listing does not mention a stone. The Geras grill-top oven sits on gas or charcoal grills rather than replacing the lid. Of the three, only the onlyfire kit adds a rotisserie.

Verdict

Buy the onlyfire kit if you own a 57 cm kettle and want a pizza ring and a rotisserie in one box, with a large 15 inch stone. If you only care about pizza and like a front opening, the KettlePizza Basic 22.5 is the leaner option. Owners of gas grills should look at the Geras grill-top oven instead.

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Compared with alternatives in: Best charcoal pizza ovens, Best pizza oven and BBQ combos

Amazon listing title: onlyfire BBQ Rotisserie & Pizza Oven Kit for Weber 57 cm Kettle Grill