A teaspoon is a small spoon typically used for stirring beverages or measuring ingredients in cooking and baking. It is part of a set of standard measuring spoons, which also includes tablespoons and cups. A standard teaspoon holds about 5 milliliters of liquid or approximately 4.9 grams of granulated sugar. Teaspoons come in various materials, including stainless steel, plastic, and ceramic. They are often used in everyday tasks, such as adding sugar to tea or coffee, and are essential tools in the kitchen for precise measurements. The abbreviation for teaspoon is tsp.