A tablespoon (US) is a unit of volume commonly used in cooking and serving. It is part of the US customary system, defined as 14.787 milliliters.
The tablespoon's origins date back to the 18th century when it was standardized in the US. It evolved from the size of traditional serving spoons used in dining. The US tablespoon was officially defined in the late 19th century to provide consistency in recipes and cooking.
The tablespoon is predominantly used in cooking and baking for measuring ingredients. It is prevalent in the United States and is often found in recipes, dietary guidelines, and nutritional labeling. In some scientific contexts, it can be used for measuring liquids and solids.