Toast is a form of bread that has been browned by exposure to radiant heat. This browning is the result of a Maillard reaction altering the flavor of the bread and making it firmer so that it is easier to spread toppings on it. Toasting is a common method of making stale bread more palatable. Toast is commonly eaten with butter or margarine, and sweetened toppings, such as jam or jelly. Regionally, savoury spreads, such as peanut butter or yeast extracts, may also be popular. When buttered, toast may also be served as an accompaniment to savoury dishes, especially soups or stews, or topped with heartier ingredients like eggs or baked beans as a light meal.