Yes — a ceramic kamado can hold a low-and-slow cooking temperature of roughly 100–110 °C for 12 hours on a single load of lump charcoal. The trick is not a bigger fire, it is a smaller one. A thick ceramic wall traps the heat, a gasketed lid stops air leaking around the rim, and the bottom vent plus the top daisy wheel hold a very small, very steady airflow. Load the firebox once, light the top of the pile, bring the cooker up slowly to 100–110 °C, shut the vents down to a sliver, and leave the lid closed. That is why the design is described this way: “the kamado is perfect for slow and cool smoking. It doesn’t require constant fire tanding.” An overnight pork shoulder or a 12-hour brisket needs no refuelling at all.
Can a kamado really hold 110 °C for 12 hours without refuelling?
Short answer: yes, when the firebox is loaded correctly and the lid stays shut. Doubt usually comes from thin steel grills, where the fire sits in open air, wind strips heat off the shell, and the fuel bed collapses in two or three hours.
Inside the firebox, “the heat circulates and refracts inside the firebox” and radiates back onto the fuel bed instead of escaping up the sides. The ceramic wall is a deliberately slow conductor, so little heat leaves through the shell even at night with a light breeze. With almost no energy wasted, the fire needs only a trickle of oxygen to hold 100–110 °C — and a trickle of oxygen is exactly what a long cook needs.
The practical limit is the fuel, not the ceramic. One full firebox of good-quality lump in a 22-inch kamado holds a low-and-slow temperature well past 12 hours. Cheap briquettes full of dust and fines burn hotter and faster and shorten that window, so load large pieces first, fill the gaps with medium ones, and keep the dust out.
How do you load and light a kamado for a 12-hour cook?
A 12-hour cook is won or lost before the food goes on.
- Clear the old ash. Scoop yesterday’s ash out with an ash tool and check the holes in the fire grate are clear — airflow through the firebox controls the whole cook.
- Fill, do not pack. Add large lump pieces first, then medium pieces into the gaps, up to the top of the firebox. Do not compress the pile — you want air channels between the pieces.
- Light the top of the pile only. Use an electric charcoal starter or a clean fire starter cube. Never use lighter fluid inside a ceramic cooker; the ceramic soaks the smell up for months.
- Add smoke wood early. Bury two or three fist-sized chunks of fruit wood or oak in the lump so they smoulder slowly rather than flare.
- Come up slowly. Open both vents wide and let the cooker climb to about 150 °C before closing them down to your target of 100–110 °C. Rushing this stage causes runaway fires.
Fit a wireless digital thermometer probe now, before the meat goes in, so you never have to open the lid to check the internal temperature.
Which vent settings keep a low-and-slow fire steady overnight?
The bottom vent is the coarse control and the top daisy wheel is the fine control. Move one at a time, in small steps, then wait ten minutes before touching anything again.
Three habits protect the setting you just dialled in: keep the lid closed, because every peek dumps heat and feeds oxygen; keep the cooker out of the wind or under a rain cover, because a gust across the top vent changes the draw; and log the vent positions, because the same setting holds again on the next cook.
What can you cook in 12 hours on a 22-inch kamado?
The 22-inch (AU-22) model has a 56 cm main shell, an 18.8-inch (47.8 cm) cooking grid and a 91 cm working height, so you are loading and probing at a comfortable standing position rather than bending over a low kettle. Net weight is 76.5 kg and gross weight 88 kg, which is worth mentioning to anyone who wonders whether a ceramic cooker stays where it is put.
Capacity on the 22-inch model: one 22 lb turkey, 16 burgers, 7 vertical chickens, 10 steaks or 14 racks of vertically hung ribs. For long cooks the vertical chicken and rib set-ups matter most, because they stack food upward into the dome instead of across it.
Why does a kamado keep meat moist on a long cook?
Almost no air gets in, and almost no moisture gets out. With the fire running on a trickle of oxygen, the airflow through the dome is a fraction of what a metal smoker pulls, so nothing is blowing dry heat across the meat. The ceramic also radiates heat from every direction, so there is no single hot spot drying one side while the other stays raw. The manufacturer’s own summary is the plainest version: “It use less heat for cooking, save energy. It keep the moisture and will not make food dry and burn out.” A shoulder pulled at 93–95 °C still releases juice when you shred it.
What this means for your retail customers
Three concrete things a distributor or retail buyer can act on this week.
1. Match the size to the household, not to the biggest box on the floor. Our kamado range covers a 15″, 16″, 18″, 21″, 22″, 23″, 26″ and 27″ size band. Couples and small balconies do well on 15″–18″; a family cooking for four to six lands on 21″–22″, which is where the AU-22 sits with its 56 cm shell and 18.8-inch grid; 23″, 26″ and 27″ go to entertainers, large families and light commercial use. Buyers who match grill to household size see fewer returns and better word of mouth.
2. Bundle the slow-and-low accessory kit. The five accessories that turn a kamado into a 12-hour smoker are the wireless digital thermometer (never open the lid), the double cooking grid (two levels of food), the versatile elevator (raises the grid for a hot finish), the electric charcoal starter (clean top-down lighting) and the rain cover (stable temperatures overnight). Sold as a kit rather than one at a time, the attach rate is higher and the customer succeeds on the first cook.
3. Give store staff one line they can repeat. Something like: one load of charcoal, two vents, twelve hours, and dinner is ready when you are. Back it with hard reassurance — our 22-inch model carries a reported complaint rate below 1% — and the conversation stops being about a price tag and starts being about an overnight cook the customer can actually pull off.
Frequently asked questions
Do I have to refuel during a 12-hour cook? No. A correctly filled firebox on a 22-inch kamado carries a 100–110 °C cook past the 12-hour mark without extra charcoal.
What cooking temperature should I hold for pulled pork or brisket? 100–110 °C for the whole cook, then take pork shoulder to 93–95 °C and brisket to 95–96 °C internally and rest both for an hour.
What does the 50–800 °C scale on the thermometer mean? That figure is the instrument’s measuring range, not a cooking setting. Low-and-slow cooking still happens at 100–110 °C.
Can I sear on the same kamado after a slow cook? Yes. “It can be used to grill, sear, bake and smoke.” Open both vents wide for a 250–400 °C searing fire at the end of the cook.
How much charcoal should I put in? Fill the firebox to the top of the rim with large lump pieces, no higher, and never pack it down — air must move between the pieces.
How do I shut the kamado down afterwards? Close the bottom vent and the top daisy wheel completely. With no oxygen the fire dies within about an hour and leftover charcoal can be reused.
Related reading
Auplex Export Team — Fujian Auplex Kamado Grill Co., Ltd. We manufacture ceramic kamado grills and accessories in Minhou, Fuzhou, China, and supply importers, distributors and retail chains worldwide. Contact us for wholesale, OEM or private-label enquiries.
Post time: Sep-22-2026