Fold Folding is a gentle way of mixing ingredients.
Folding helps to maintain some of the airy texture.
You will almost always be adding the lighter ingredient into the heavier one, not the other way around. Use a rubber spatula to fold ingredients into each other. Next, pour the light mixture on top of the batter. Repeat this mixture until the two are blended, but not until you've lost the fluffy texture of the light ingredient. The basic motion is bottom ingredients are lifted then folded gently over the top.