Why do you let pancake mix sit for half an hour?

You're likely thinking of the process of resting pancake batter. Letting pancake batter sit for 30 minutes isn't strictly necessary, but it can significantly improve the final results. Here's why:

* Gluten Development: Pancake batter contains gluten, a protein that forms a network giving pancakes their structure. Resting the batter allows the gluten to relax and develop, resulting in:

* More tender pancakes: Less chewy and more airy.

* Better rise: Pancakes will puff up more evenly.

* Improved texture: A lighter, more delicate texture.

* Flavor Enhancement: Resting allows the flavors in the batter to meld and deepen. This is especially true when using ingredients like buttermilk or yogurt, which contribute to a more complex flavor profile.

* Even Cooking: Resting allows the batter to absorb more liquid, resulting in a batter that cooks more evenly and avoids the risk of raw spots.

However, it's not essential for every pancake recipe. If you're short on time, you can skip the resting step. But for the best results, especially when using ingredients like buttermilk or yogurt, it's highly recommended to let your batter rest for at least 30 minutes.