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Toast from WikiPedia:

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.

The usual method of browning bread is by the use of a toaster, a small appliance made for that purpose, first used in the late nineteenth or early twentieth century. For a modern toaster, sliced bread is placed into the narrow slots on the top of the device and the desired toast setting is selected (some toasters have more elaborate settings than others). Then, the lever on the side of the toaster is pushed down, simultaneously turning on the heating elements.

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