Definition of Teaspoon
A teaspoon is a small volume unit used for ingredients measured in very small amounts. It is common in both cooking and baking for spices, extracts, salt, and leavening agents.
In practical recipe use, a teaspoon is often the difference between balanced flavor and over-seasoning. Because the amount is small, even minor measuring mistakes can affect the final dish.
Like other spoon measures, a teaspoon measures volume rather than weight. The gram value of a teaspoon changes by ingredient, especially with powders, liquids, and sticky ingredients.