The main ingredient in pancake batter is flour. Typically, all-purpose flour is used, providing the necessary structure and texture. The flour is combined with other ingredients such as eggs, milk, sugar, baking powder, and a pinch of salt to create a smooth batter. The ratio of these ingredients can vary, but flour remains the fundamental component. It contributes to the fluffiness and thickness of the pancakes, influencing their overall taste and appearance when cooked. Fluffy pancakes often result from the right balance of leavening agents and moisture in the batter.