Toast is sliced bread which has been browned by exposure to dry heat ("toasted"). This browning

    reaction is a form of the 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, thereby making an open-faced sandwich. Toast is a typical breakfast food, and may be

  bought as is in supermarkets, or made at the home from regular bread.