Yes, resting pancake batter for 5-15 minutes allows the gluten to relax and the leavening agents to work, resulting in lighter, fluffier pancakes.
Resting pancake batter is a crucial step for achieving the best texture. When you mix pancake batter, gluten develops. Gluten is a protein found in wheat flour that, when hydrated and agitated, creates elasticity. While some gluten is necessary for structure, too much can lead to tough, chewy pancakes. Resting the batter allows the gluten strands to relax, resulting in a more tender crumb.
Furthermore, resting gives the leavening agents (baking powder or baking soda) time to work. These agents produce carbon dioxide bubbles, which create the light and airy texture we associate with good pancakes. During the resting period, these bubbles begin to form, and the batter thickens slightly. This pre-leavening process contributes to a higher rise and a more delicate texture when the pancakes are cooked. A resting time of 5-15 minutes is generally sufficient.
Avoid overmixing pancake batter. Overmixing develops too much gluten, even with resting. Mix only until the dry ingredients are just moistened, leaving some small lumps. These lumps will disappear during the resting period.