date:Dec 21, 2018
t time as you're mixing ingredients for something you'll bake, it takes them less time to incorporate into the mixture, according to Cook's Illustrated. If you add the eggs all at once, it takes more time to incorporate them, and that may be longer than the batter should be mixed. You may end up with textures in your baked goods that aren't ideal, which you'll learn about below.
The chemistry behind it: Oil and water don't mix easily. The oil in the batter whether it's butter or a cooking oil