The Karu 12G is the Swiss Army knife of pizza ovens. Wood on weekends, gas on weeknights — it does both and does them well. The glass door and built-in thermometer are features the pricier Koda 16 doesn't have. Just know that wood-firing demands commitment.
Best for: pizza makers who want the flexibility to burn wood, charcoal, or gas
Key Takeaways
The Karu 12G is Ooni's answer to "I want it all." Wood-fired Neapolitans on Saturday? Done. Quick gas-fired pies on a Wednesday? Swap the burner in 30 seconds and go. No other oven at this price gives you that kind of flexibility.
The real upgrades over the original Karu 12 are meaningful: the borosilicate glass door with ClearView technology (stays soot-free) means you can actually watch your pizza cook. The built-in analog thermometer removes the guesswork. The powder coating solved the predecessor's rust problem. And the fuel tray is 140 cubic inches larger, so you're not constantly feeding the fire.
Here's the honest truth about wood-firing, though: it's not set-and-forget. You're managing flame height, feeding wood every few minutes, monitoring temperature, and rotating your pizza — all at the same time. That's part of the appeal for the right person. But if that sounds like stress rather than fun, get the Koda 16 and save yourself the headache. The Karu 12G rewards people who enjoy the process.
Ooni Karu 12G Review
Video coming soon
| Cooking Surface | 13.2" × 13.2" cordierite stone (15mm thick) |
| Dimensions | 28.3" × 16.5" × 30.3" |
| Weight | 34.2 lbs |
| Max Temperature | 950°F / 500°C |
| Heat-Up Time | ~15 min (gas), 15-20 min (wood/charcoal) |
| Fuel Type | Wood, charcoal, or propane (gas burner sold separately, ~$99) |
| BTU | 15,350 (gas burner) |
| Key Features | Borosilicate glass door, built-in thermometer, magnetic door latch |
On gas, it performs like a smaller Koda — 60-90 second Neapolitan pies at 900°F+, straightforward heat management. Recovery between pizzas is under 5 minutes.
On wood, the magic happens. Pala Pizza tested it at 912°F stone temp for a 75-second bake with "puffy crust and excellent cheese melt." The sweet spot is around 880°F — hot enough for proper leoparding without burning the bottom before the top finishes.
For New York-style, dial down to ~530°F with low-to-medium flame for a 4-minute bake. The glass door makes monitoring easy.
The catch: wood consumption is high. The oven eats through small hardwood chunks quickly during a multi-pizza session. And the back of the stone runs about 80°F hotter than the front, so rotation is essential.
The powder-coated carbon steel shell is a major upgrade from the original Karu 12, which developed unsightly "tempering colors" and surface rust. The glass door uses borosilicate (lab-grade glass rated for thermal cycling) with a magnetic latch that's noticeably better than the lift-and-pull mechanism on the Karu 16. Heat-resistant handles on every component you might touch during a cook are a thoughtful safety detail. The 15mm cordierite stone is the same spec as the Koda 16.
Initial setup takes about an hour — attaching legs, chimney, and door. Not difficult, just methodical.
On gas, the experience is nearly identical to the Koda series: turn on, wait, cook, minimal cleanup.
On wood, budget extra time for everything: fire-building, preheating (some users report 40+ minutes for full stone saturation), constant fuel management during cooking, and post-cook cleanup. Soot builds on every component except the glass door. The chimney needs periodic deep cleaning. This is the price of authentic wood-fired pizza.
At 34 lbs with folding legs, it's genuinely portable — nearly 10 lbs lighter than the Roccbox. You can take it camping, to a friend's house, or to the park.
What We Love
What Could Be Better
“Got it as a gift and now do pizza Fridays with pizza parties. The glass door is a game-changer — you can actually see what's happening in there.”
— BBQGuys verified purchaser
“Pizza in legit 60 seconds with a crispy bottom and fully cooked results. A perfectly crisp, flame-kissed crust with 30 seconds per side.”
— Long-term owner review
“It takes about 45 minutes to heat the stone to 750 using wood and charcoal. The oven consumes wood at a high rate to maintain heat and keep flames streaming along the top.”
— BBQGuys verified purchaser (honest take)
Buy This If
Skip This If
Pick a recipe and fire it up — we have 17 tested recipes across 5 pizza styles.