
What holds the bubbles in a foam apart, and why does foam slowly collapse? Discover how baking powder puffs up cake batter, why a little egg yolk makes egg whites harder to whip, and why gentle folding keeps more air in.

What holds the bubbles in a foam apart, and why does foam slowly collapse? Discover how baking powder puffs up cake batter, why a little egg yolk makes egg whites harder to whip, and why gentle folding keeps more air in.