A handful of dry wood may be enough to boil a pot. But how much wood do you need to cook without running out of fire in the middle of a meal? The answer depends less on the size of the pile than on your firebox, the planned dish, and the quality of the fuel. With a well-managed fire, a few thin branches become a real cooking powerhouse.
The classic trap is to gather a lot of large logs. They are reassuring, but they don't necessarily make for an easy-to-control fire. For outdoor cooking, you mainly need dry, calibrated fuel that is available at the right time. The right reserve is one that allows you to quickly raise the temperature, maintain a steady flame, and then stop feeding the fire as soon as the dish is ready.
How much wood to cook depending on the meal?
The quantities below are guidelines for very dry wood, with an efficient firebox and a lidded pot. They are deliberately broad: wind, altitude, pot diameter, and your fire management skills can all vary consumption.
Boiling water
For 500 ml to 1 liter of water, count about 80 to 150 g of very dry kindling in a high-performance rocket stove. This often represents a small handful of twigs and small sticks. With an open fire poorly protected from the wind, the same operation can require two to three times more wood.
This is the most telling test of a firebox's efficiency. If you burn a large armful for a coffee, the problem is not necessarily your wood: air circulation may be poor, flames may be licking empty space, or the pot may not be absorbing enough heat.
Preparing a simple meal for one or two people
For pasta, rice, soup, sautéed vegetables, or eggs, generally plan for 300 to 700 g of dry wood. The lower range works for a quick meal on a rocket stove. The upper range allows for maintaining cooking for 20 to 30 minutes, sautéing food, or facing a cool evening.
A good practice is to start with half of your reserve within reach and keep the rest dry and sheltered. This prevents overfeeding the fire at the start and keeps fuel for the cooking phase that really matters.
Grilling, searing, or long cooking
Pan-frying requires a lively but controllable flame. To sear meat, grill vegetables, or cook several batches, count on 600 g to 1.2 kg of wood. For simmering, a large group meal, or cooking for more than an hour, bring more: between 1.5 and 3 kg depending on the number of guests and the type of firebox.
Grilling consumes more than a pot, as some of the heat escapes. However, it is not necessary to maintain a huge blaze. Look for stable heat, add wood in small quantities, and move food if the flame becomes too aggressive.
The firebox changes everything
For the same meal, an open fire will always consume more than a firebox designed to concentrate heat. On three stones, the flames go in all directions and the wind steals a significant part of your energy. It's convivial, but not very precise.
The principle of a rocket stove is different: air is drawn in and accelerated through a duct, flames are concentrated under the container, and combustion becomes more complete. Result: you cook with short, thin pieces of wood, without carrying a reserve of logs. This is exactly the advantage of compact equipment like an IronEmber stove: transforming a few pieces of wood into useful heat, where you need it.
This efficiency does not mean you should burn everything at once. A rocket stove is fed regularly, with small sections of wood. It reacts quickly. Add a stick, observe the flame, then adjust. This active management requires a little more attention than a large fire, but it gives much greater control for cooking.
The right size of wood for a cooking fire
For most outdoor meals, opt for sticks 15 to 25 cm long. Their diameter should range from that of a pencil to that of your thumb. Prepare several sizes before lighting: very thin for starting the flame, medium for raising the temperature, then a few thicker pieces for longer cooking.
Do not underestimate this preparation. The fire becomes tedious when you have to search for wood while the pot is overflowing. A small sorted pile is better than a large messy pile. For a meal for two people, prepare a pile equivalent to the volume of a well-filled grocery bag if you are cooking on an open fire, or about half that on an efficient rocket stove.
The wood must be dry. A freshly cut or wet branch consumes some of the heat to evaporate its water before burning properly. It smokes, blackens your pot, and prolongs cooking. Look for deadwood that has remained off the ground, whose small branches snap cleanly rather than bending.
Softwood, hardwood: which one to bring?
Softwood, such as dry pine or poplar, lights easily and provides a quick burst of heat. It is practical for starting a fire, boiling water, or reviving a firebox. However, it burns quickly and can produce sparks, especially if it contains resin.
Hardwood, such as beech, oak, ash, or hornbeam, burns longer and produces more durable embers. It's a good choice for grilling or prolonged cooking. It can be a little harder to light if it's in large pieces, hence the benefit of splitting it or combining it with dry kindling.
In all cases, never cook with treated, painted, varnished, glued wood, disassembled furniture, or unidentified pallets. Their smoke should not be near your food. Also avoid very resinous woods for long cooking over flames: they can produce a lot of smoke and a strong taste.
Reduce consumption without sacrificing the pleasure of the fire
The lid is your best ally. It speeds up boiling, limits heat loss, and saves you wood without changing your cooking method. A pot adapted to the diameter of the firebox also helps: if the flames largely spill over the sides, you heat the air before heating your meal.
Then protect your cooking area from the wind, without suffocating the firebox. A simple orientation of the stove or a non-combustible screen placed at a distance can make a dramatic difference. Wind cools the pot and disrupts the flame. In cold or humid weather, plan for about 30% more wood.
Also think about the menu. Pre-soaked pasta, finely chopped vegetables, semolina that swells off the heat, or a one-pot soup reduce combustion time. When bivouacking, the most satisfying meal is not the one that requires the most fuel: it's the one that still leaves you time to enjoy the warmth and the place.
A simple reserve to prepare before leaving
For an overnight trip with two hot meals for one or two people, bring 1 to 1.5 kg of dry wood if you are relying on a rocket stove and can supplement with authorized wood on site. If you cannot gather fuel, if the weather forecast indicates wind, or if you want to grill, plan for 2 kg or more instead.
In the field, always keep a small intact reserve for lighting the next day. Don't burn your best sticks to maintain an unnecessarily high flame. As soon as the water simmers or the pan is hot, reduce the fuel supply. You cook better, you dirty your equipment less, and you exploit every piece of wood until the last useful heat.
When preparing your next outdoor meal, don't measure your autonomy by the height of the log pile. Measure it by the quality of your fire: dry wood, ready sections, a concentrated flame, and a precise gesture are often enough to cook far from everything, with almost nothing.