RuneScape/Food

Food is used to heal (regain hitpoints). Different foods heal different amounts of hitpoints.

The food items that can be cooked like fish and meat will often have a higher selling price raw compared to cooked when dealing with other players. This is because there is some demand by players to buy raw foods specifically to raise their cooking stats.

Meat
Some monsters will drop meat when they die. It is a common source of food and can help heal your hit points if eaten once it has been cooked. However there is always some chance of failure in cooking that could instead result in burning the food.

Burnt meat is what you get when you fail to cook raw meat properly. It is completely useless, so drop it if you accidently burn your meat.