Toast is slice bread which has been browned by exposure to dry heat ("toasted"). This browning reaction is a form of Maillard reaction. Toasting warms the bread, making it more pleasant to eat for some, and makes it crisp such that it holds toppings more securely. Toasting is also a common method of making stale bread palatable. Toast is often served with butter, cheese, marmalade, or any number of other toppings. Toast is a typical breakfast food.