Lidless BBQ — when does open grilling work?
Most BBQ guides say "lid closed" — and for low & slow, that's always correct. But there are dishes and situations where the lid should be open. Open grilling provides direct radiant heat, maximum control over flame and char, and prevents steam and smoke from softening the end result. This guide explains when open is better than closed, and the physical reason why.
The physical difference: lid closed vs. open
With the lid closed, hot air circulates around the meat — it acts like a convection oven. The meat cooks from all sides simultaneously, including from above due to the circulating warm air. The temperature in the BBQ is even and predictable. Moisture and smoke are retained in the enclosed space. Ideal for anything that cooks low and slow indirectly.
With the lid open, the meat cooks only from below — due to the direct radiant heat from the glowing coals. There is no convection, no circulating warm air. The temperature directly above the coals is extremely high (300–450°C at the coal layer) but drops quickly with height. Moisture evaporates immediately and is not retained by the enclosed space — this results in a drier, crispier surface.
When do you use the BBQ without a lid?
| Situation | Lid open or closed? | Reason |
|---|---|---|
| Thin chicken fillet (<2 cm) | Open | Cooks so fast that lid effect is minimal; direct visibility prevents burning |
| Hamburger | Open or closed — both work | Open for more char and control; closed for slightly faster cooking |
| Sausages | Open | Open grilling gives the characteristic roasted skin without steam effect |
| Vegetables (thin pieces) | Open | Cooks quickly, char desired, no steam effect needed |
| Shrimp | Open | Definitely cooked in 3–4 min; steam makes them rubbery |
| Finishing steak (sear) | Open | Maximum direct heat for the crust; lid closed increases ambient temperature too much |
| Thick steak (>3 cm) | Closed for cooking, open for sear | Combination method: indirect cooking + direct sear-finish |
| Chicken (whole or thighs) | Closed | Too thick for open grilling without burnt surface and raw center |
Controlling flame and flare-ups when grilling open
Open grilling carries an additional risk: flare-ups. Fat dripping from the meat onto the glowing coals ignites immediately — the flame chars the outside of the meat while the core is still raw. Flare-ups are not the same as proper cooking.
Trim excess fat before grilling. Use the 2-zone method: grill on the direct zone but keep the indirect zone clear as a refuge. In case of flare-ups: move the meat directly to the indirect zone until the flame dies down, then move it back. More: 2-zone fire on a kettle — the safety zone.
Water on glowing coals causes an ash explosion — ash and soot land on the meat. Move the meat, don't move yourself. The flame will extinguish itself when no more new fat drips.
Open grilling on a kamado — separate approach
A kamado is designed for closed use — the air circulation is tuned for a closed system. Open grilling on a kamado (lid up) creates an uncontrolled airflow that can heat the coals up to 400–500°C. This can lead to thermal damage to the ceramic due to extreme temperature differences. On a kamado: always use the lid, even for direct high-temperature grilling — just open both vents fully for maximum heat with the lid closed.
Direct grilling on the kamado: Low & slow on a kamado — the practical session guide. Direct vs. indirect heat in general: Direct vs. indirect heat — when to use what?
The rule of thumb
Thinner than 2 cm and shorter than 10 minutes: lid open is possible, but not mandatory. Thicker than 2 cm or longer than 10 minutes: lid closed for even cooking. Finishing after indirect cooking (sear): lid open for maximum direct heat on the crust. Low & slow: always lid closed — no exceptions.
When grilling open over high direct heat, sugars in the rub can burn quickly. Use a low-sugar rub for high-heat applications — or apply the rub only after searing. More: Which rub for which meat and which technique?
Open or closed — always rub
Regardless of the technique: the right rub makes all the difference. Discover which blend suits your dish.
Which rub for which meat?Starter Pack · 3 flavors