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 can be made from various materials, including stainless steel, plastic, and ceramic. They are commonly found in kitchens and dining settings, often used for serving sugar, salt, or other condiments. The size and shape of a teaspoon can vary, but its primary function remains consistent across different cultures and cuisines.