Minecraft wiki entry for Campfire, associated text: The player can place raw food on a lit campfire by using the food item on it. Up to four food items can be placed on a single campfire, which cooks the items simultaneously. Unlike other blocks that can cook food, campfires do not require any kind of fuel to cook. On a campfire, foods produce small smoke particles, indicating they are being cooked. Food items take 30 seconds (600 ticks) to cook, compared to 10 seconds for furnaces or 5 seconds for smokers. Assuming that one uses all four slots to cook at once, the Campfire is, therefore, more efficient than furnaces (taking 10 seconds less per four items and no fuel) for cooking, but must be watched so as to pick up the food and refill it once it is done. It is slower than a smoker by about ten seconds, but its lack of fuel consumption could be seen as a worthwhile trade-off. Once finished cooking, items pop off the campfire. If the campfire is extinguished while cooking food, it resets as if it had not been cooked at all. Food items can be placed on an unlit campfire.