Cooking is achieved when completing various recipes at a Camp Fire.
Once accessed put fuel such as wood, coal, paper etc... into the fuel slots on the right.
Then select the recipe you wish to craft/cook, provided you have the necessary materials the finished product will appear in the out put slots.
Additional recipes can be unlocked via placing cooking tools in the top right slots.
Cooking pot ( used to make various drinks and foods)
Iron Grill ( used to make various food items)
Beaker ( used for various misc. crafting)