One Oven That Burns Wood, Charcoal, or Gas — The Karu 12G Is For When You Actually Want Options
Most people buy a gas pizza oven because it's convenient. Then one summer evening they want wood smoke. Then they're camping and want to use charcoal. The Karu 12G was built for the person who doesn't want to answer that question before they own the oven.
The "G" in Karu 12G is the upgrade from the original Karu 12: the glass door. It sounds minor until you're trying to watch a pizza cook at 950°F without opening the oven and losing 200 degrees.
Is This Page For You?
- ✓You want wood-fired flavor when you want it, gas convenience when you don't — one oven handles both
- ✓The glass door (the 12G upgrade) lets you monitor the pizza without opening the door and dropping the temperature
- ✓950°F capability on all three fuels — not a "lower performance" tradeoff for using wood
- ✗Gas attachment sold separately — if you want gas capability, budget for the gas burner add-on
Specifications
| Fuel | Wood, charcoal, or gas (gas burner sold separately) |
| Max Temp | 950°F |
| Preheat Time | 15–20 min (gas), 25–30 min (wood/charcoal) |
| Pizza Size | Up to 12 inches |
| Key Feature | Glass door (G upgrade) |
| Weight | ~26 lbs |
What Verified Buyers Actually Say
"The glass door is not optional"
Almost universal consensus: buyers who had the original Karu 12 and upgraded to the 12G call the glass door the single best functional improvement. Being able to watch the cook changes technique.
"Wood mode takes practice but delivers different results"
Buyers consistently note wood mode takes 3–5 sessions to nail temperature management. The payoff: a light smokiness that gas can't replicate. Not better, different.
"Budget for the gas burner from day one"
Repeated buyer pattern: buy the Karu 12G, struggle to maintain wood temperature for the first few sessions, wish they'd bought the gas burner add-on immediately. Add it to the initial order.
Ready to Buy the Ooni Karu 12G?
Multi-fuel flexibility — wood, charcoal, or gas. Glass door included. 950°F on all three fuels.
Check Current Price on Amazon →Frequently Asked Questions
Do I need to buy anything extra to use gas with the Karu 12G?
Yes. The Ooni gas burner attachment is sold separately. The oven ships configured for wood/charcoal. The gas burner attaches to the back. Most buyers recommend budgeting for it with the initial purchase if you plan to use gas at all.
Karu 12G vs Koda 16 — which should I buy?
If you want gas-only convenience and a bigger cooking surface, get the Koda 16. If you want multi-fuel flexibility and wood-smoke capability, get the Karu 12G. The 12G makes a 12-inch pizza; the Koda 16 makes a 16-inch. Different tools for different priorities.
How long does the wood fire last?
You add small pieces of hardwood or wood chunks every few pizzas — roughly every 10–15 minutes. It's more active than gas but becomes routine. Most buyers use kiln-dried hardwood for cleaner, hotter burns.
Compare Other Outdoor Pizza Ovens
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