Cook food over fire

Roast food on sticks and hot stones so it is safe to eat and tastes good.

easy⏳ an hourtradition — not yet hand-tested

Cooking is not just about taste. Heat kills the germs and parasites (tiny creatures that live in raw meat and can make you very sick) that raw food carries. It also breaks food down so your body gets more energy from every bite. A cooked meal feeds you better and risks you less — that trade never stops being worth it.

The one rule that matters most: cook over coals, not over flames. Flames are wild — they blacken the outside of food while the inside stays raw, and they coat everything in soot. Coals, the glowing orange bed a fire leaves behind, give steady, even heat you can control. You light a blaze, then wait for it to become a stove.

The second rule: fire safety does not relax because dinner is involved. Clear the ground to bare dirt for two big steps around. Check the wind — if it can carry sparks, cook another time. Never walk away from flame or coals, even "just for a minute." When you finish, drown the fire, stir the wet ash, drown it again, then hold the back of your hand near it — any warmth means it is not out.

You need

• A fire burned down to coals. Light it 30–45 minutes early, on hardwood if you can (dense broadleaf wood — oak, beech, maple): it makes coals that last, where pine burns fast and spits sparks. Ready when flames are gone and the lumps glow orange under grey ash — a palm-width deep (8–10 cm), wider than the food.
• A green stick, thumb-thick and arm-long. "Green" means cut fresh from a living tree, full of sap, so it resists catching fire (it will still char if you leave it over the coals — watch it) — a dry stick is firewood and will drop your dinner in the ash. It should bend without snapping — that spring is the sap. Willow, hazel, maple, and oak are safe. Never use oleander or yew — both are poisonous and can poison the food on them. If you cannot name the tree, pick another.
• A flat, dry stone (optional, for stone-top cooking). Dinner-plate size, two to three fingers thick (3–5 cm), from a dry hillside or high dry ground — never from a river, a lakeshore, or wet soil. The reason is in Watch out — the most important line here.
• Food cut small. Pieces 2–3 cm thick — two fingers — cook through before they burn. Big lumps do the opposite: black armour outside, raw danger inside.
• Water nearby, enough to drown the fire and rinse your hands after raw meat — your off-switch for everything that can go wrong.

Steps

1. Prepare the ground first. Bare dirt two big steps around, nothing overhead, wind checked — two minutes that prevent the unfixable mistake.
2. Rake a bed of coals to one side of the fire. Drag glowing lumps into a flat, even layer. Keep a small fire on the other side — your coal factory, making fresh coals as the bed fades. This two-zone setup is the whole kitchen: one side makes heat, the other serves it.
3. Test the heat with your hand. Hover your palm where the food will sit and count. 4–5 seconds before it hurts: right for roasting. 2–3 seconds: very hot — good for a quick sear (browning the outside fast), easy to burn everything else. 7–8 seconds: gentle — too slow to cook through. Your palm is a thermometer you always carry.
4. To roast on a stick: sharpen the green stick, peel the bark off the tip (bark tastes bitter), and skewer the food along the stick's length — through twice, in-out-in, so it cannot spin or slide. Prop or hold it 15–25 cm above the coals — about a stretched hand-span.
5. Turn the food every minute or two. Slow, even turning is the whole skill. Listen: a soft steady sizzle means cooking; loud hissing and fast darkening means too hot — lift it a hand higher; silence means too cool — lower it. Smell it too: wet and flat at first, then rich and toasty as it browns.
6. To cook on a stone: stand the flat, dry stone on edge at the border of the fire — close, not in the flames — and heat it slowly for 30–60 minutes, so any last dampness escapes as gentle steam instead of trapped pressure. Drag it out with two sticks, set it flat, brush off the ash with a leafy green twig, and cook on it like a pan. Flick a water drop on top: if it dances, the stone is ready. Good for thin meat, fish, eggs, and flatbread — and it stays hot long after leaving the fire.
7. Roots and tubers (potatoes and their wild cousins — but only roots you can name as safe to eat: cooking kills germs, it does not remove plant poisons) go into the ash at the edge of the coals — ash, not the orange centre, or the skins char before the middle softens. Bury halfway, turn every ten minutes. Done when a sharpened twig slides in with no push-back — 30–60 minutes; a fist-sized root takes the full hour.
8. Check that meat is truly done — every piece, every time. Cut into the thickest part, to the middle: no pink anywhere, flesh firm, juices running clear, not red or cloudy. On anything with a bone, check right against the bone — the last place heat arrives. Fish is done when it turns from glassy to solid white and flakes at a touch. No one of these signs is proof by itself — juices can run clear a little before the middle is truly done — so demand all of them together. When in doubt, cook longer: a dry meal is a small loss, and the germs have no colour, no smell, and no mercy.
9. Afterwards, put the fire fully to sleep. Drown, stir the sludge, drown again, feel for warmth with the back of your hand. Grey ash hides live coals for hours; a dead-looking bed can relight in wind.

Watch out

• Wet or river stones can explode in a fire. Water hides in pores too small to see; heat turns it to steam, steam needs vastly more room, and stone cannot stretch — so it bursts, throwing hot, sharp shrapnel. River, lake, and damp-ground rocks are soaked to the core. The save: only stones from high, dry ground, heated slowly at the fire's edge while you stand back. If a stone hisses or ticks, walk away.
• Burned outside, raw inside means too much heat, open flame, or pieces too big. The save: move the food higher, wait for calmer coals, or cut smaller and restart. You cannot fix a charred crust, but you can always cook a raw middle.
• Meat near the bone cooks slowest. Bone soaks up heat and shields the meat around it. Check there first, not at the thin edge.
• Raw meat juice on cooked food makes it raw-risky again. The germs live in the juice, and cooked food will not be heated again to kill them. Separate sticks, stones, and leaves for raw and cooked; rinse your hands in between; hold the raw-meat stick over the coals a minute before it carries anything else.
• Undercooked pork, bear, and freshwater fish carry the worst parasites — creatures that survive light cooking. No benefit of the doubt: cooked hard to the centre — grey meat, solid white flaking fish — every time.
• Dripping fat flares into flame. Fat is fuel; on coals it ignites in a bright whoosh. Expect it, keep your face out of the space above the food, and when a flare starts pull the food sideways off the coals — not up through the flame — until it dies. Fatty meat cooks best at the bed's edge, where drips land on ash.
• Smoke is not seasoning for your lungs. Sit upwind; if the wind shifts, move yourself, not just your head.
• Never burn charcoal or coals inside a closed shelter. Glowing coals make carbon monoxide — a gas with no colour or smell that takes the place of air in your blood. Outside it drifts away; in a tent, hut, or cave it puts you to sleep and you do not wake. Cooking fire lives under open sky, always.

How it works

Why coals beat flames. A flame is not a thing — it is a place: the spot where hot gases boiling out of the wood meet air and burn. Those gases rise in ragged, flickering tongues, fierce here, cool there, and the parts that fail to burn completely stick to your food as black soot. Cooking over flame is cooking on a stove that changes its mind every second and spits black paint — that soot — at your dinner. Coals are the opposite: the wood's charcoal skeleton, glowing steadily as it burns from the surface inward — one even temperature across the whole bed, a hotplate made of light. That is why a baker waits for the oven, not the blaze: it is never the fire you want, it is the steady heat it leaves behind.

Heat that travels like light. Glowing coals cook mostly by radiant heat — invisible rays, cousin to light, flying in straight lines from every glowing surface to warm whatever they strike. You feel them as the sting on your palm in the hand test. And like light, they only warm what they can strike. Think of what the food "sees" looking down: held low, glowing coals fill its whole view, so rays hit it from every direction; lifted, the bed shrinks to a small orange patch far below, most rays fly past instead of landing, and the heat falls away fast — a hand higher can be the difference between searing and gentle roasting. That steep falloff is your temperature dial. Height above the coals is not a detail — it is the knob.

Why "cooked through" is the only "cooked." Heat kills germs and parasites, but only where it actually reaches — and heat crawls into meat slowly, from the outside in. The surface can sizzle while the centre sits at raw temperature. So every doneness check is one question asked three ways: did the heat reach the middle? Juices run clear because heat has firmed the flesh and cooked the redness out. No pink at the bone because the bone is the finish line of the heat's journey. Cut thick pieces open because your eyes can only inspect what they can see.

Why stones cook and wet stones kill. A stone is a heat battery: slow to charge beside the fire, slow to spend afterward — a patient, forgiving pan. But charge a stone with water hiding in its pores and the water becomes steam — the same water, now a gas, demanding enormously more room — and rock does not stretch. The battery becomes a bomb. Dry stone from high ground: pan. Wet stone from the river: shrapnel.

Why the stick must be green. A living branch is about half water by weight. Over the coals that water soaks up the heat and keeps the wood below burning temperature, so the skewer survives the very heat that cooks your food. A dry stick has no such shield — it is thin firewood holding your dinner.

Go further

• A safe first practice, today: burn a small fire to coals and do only the hand test — palm at different heights, counting seconds, feeling the steep curve. Ten minutes calibrates your hand for life.
• Bake a root in the ash as your first full meal — the most forgiving food over fire: no turning skill, no raw-meat risk, and the twig test says when it is done.
• Try the two-zone kitchen deliberately: sear fast over the hot centre, finish slow at the cool edge. Hot side, gentle side — the heart of every grill on Earth.
• Wrap food in big green leaves (or clay-mud) before burying it at the coal bed's edge — the wrap traps steam so food cooks in its own moisture. Same rules as the skewer, both of them: green and wet survives where dry burns, and the plant must be one you can name as safe — a poisonous leaf poisons the meal exactly as a poisonous stick does.
• This unlocks preservation: the same coals, kept low and smoky, dry thin strips of meat into food that keeps for weeks. Smoke and slow heat were the first pantry.
• Deepen the foundations with the fire-keeping guide this one builds on — better coals come from better fires, and those from dry wood chosen well.