Out of eggs? 1/4 cup of seltzer can replace 1 egg in yellow cake, and in testing, it produced the best texture and flavor of all the substitutes tried

As egg prices soared in the early 2020s, many bakers began to explore innovative alternatives. Surprisingly, plain seltzer water proved to be an effective and low-cost egg substitute. Its effervescence adds lift and moisture to cakes, making it a clever choice in recipes where eggs primarily serve to leaven. While not suitable for all baking, seltzer offers an economical option for those seeking to cut costs without sacrificing quality.