Minecraft wiki entry for Development_versions, associated text: Decorative fireplace without fire spread.
Does not burn items.
Crafted with a piece of coal or charcoal, sticks and logs, stripped logs, wood or stripped wood.
Cooks up to four food items, but 3 times slower than a furnace (30 seconds).
Right-click with food item to place food on campfire.
Food item pops off when cooked.
Emits a new type of particle, a smoke signal that can be seen from a longer distance than normal particles.
The particles can travel through blocks.
Placing a hay bale below the campfire causes the smoke particles to stay longer and rise higher.
Emits a light level of 9.
Can be put out using a water bucket.
Extinguishing a campfire pops off any food item on it, but the items can then not be picked up.
Can be re-lit with flint and steel, but not other fire sources like fire charges.
Repeatedly deals 1 damage when walked on.
Sneaking on a campfire prevents damage.