Egg is the top-ranked Flaxseed substitute for Cake, chosen for how well it preserves Cake's structure, moisture, and flavor. 1 options are ranked on this page by Cake-specific applicability.
Flaxseed plays a specific role in Cake — structure, rise, moisture, or flavor — and substitutes that miss the role relevant to Cake rank lower here than they might elsewhere. The list above is tuned to Cake, not to generic baking or cooking.
Start with the listed ratio but watch for Cake-specific warnings below each card — some subs need a moisture tweak, heat adjustment, or companion ingredient to work in Cake. Taste a small batch before committing.