Toast
Overview
 
Toast is bread
Bread
Bread is a staple food prepared by cooking a dough of flour and water and often additional ingredients. Doughs are usually baked, but in some cuisines breads are steamed , fried , or baked on an unoiled frying pan . It may be leavened or unleavened...

 that has been browned by exposure to radiant heat
Heat
In physics and thermodynamics, heat is energy transferred from one body, region, or thermodynamic system to another due to thermal contact or thermal radiation when the systems are at different temperatures. It is often described as one of the fundamental processes of energy transfer between...

. This browning reaction is known as the Maillard reaction
Maillard reaction
The Maillard reaction is a form of nonenzymatic browning similar to caramelization. It results from a chemical reaction between an amino acid and a reducing sugar, usually requiring heat....

. Toasting warms the bread and makes it firmer, so it holds toppings more securely. Toasting is a common method of making stale
Staling
Staling, or "going stale", is a chemical and physical process in bread and other foods that reduces their palatability. Stale bread is dry and leathery.-Mechanism and effects:...

 bread more palatable
Palatability
Palatability is the hedonic reward provided by foods or fluids that are agreeable to the "palate" in regard to the homeostatic satisfaction of nutritional, water, or energy needs. The palatability of a food or fluid, unlike its flavor or taste, varies with the state of an individual: it is lower...

.
In a modern kitchen, the usual method of toasting bread is by the use of a toaster
Toaster
The toaster is typically a small electric kitchen appliance designed to toast multiple types of bread products. A typical modern two-slice toaster draws anywhere between 600 and 1200 W and makes toast in 1 to 3 minutes...

, an electrical appliance made for that purpose. To use a modern toaster, sliced bread is placed into the narrow slots on the top of the toaster, the toaster is tuned to the correct setting (some may have more elaborate settings than others) and a lever on the front is pushed down.
Quotations

"These kind of narrative poems are called toasts. They are rhyming stories, often lengthy, which are told mostly amongst men. Violent, scatalogical, obscene, misogynist, they have been used for decades to while away the time in situations of enforced boredom, whether prison, armed services or streetcorner life."

David Toop (1991). Rap Attack 2, 29. New York: Serpent's Tail. ISBN 1852422432.

 
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