Why does leftover buttermilk pancakes turn gray?

The gray color of leftover buttermilk pancakes is caused by a chemical reaction between the baking soda and the buttermilk. When baking soda is added to buttermilk, it reacts to form carbon dioxide gas, which causes the pancakes to rise. However, when the pancakes are cooked and then left to sit, the carbon dioxide gas escapes, and the pancakes begin to turn gray.

In addition, the buttermilk also contains lactic acid, which can further contribute to the gray color. Lactic acid is a mild acid that can react with the metal ions in the baking soda to form gray-colored compounds.

Here are some tips to prevent leftover buttermilk pancakes from turning gray:

1. Store the pancakes in an airtight container. This will help to prevent the pancakes from drying out and becoming stale, which can contribute to the gray color.

2. Refrigerate the pancakes as soon as possible after they have been cooked. This will help to slow down the chemical reaction that causes the pancakes to turn gray.

3. Reheat the pancakes in the microwave or in a toaster oven. This will help to restore the pancakes' original color and flavor.