Trick 1
1/4 cup of mayonnaise added to the regular ingredients and mixed up into the batter before baking.Mayonnaise contains oil (always a necessary item in baking a moist cake), egg whites (known for giving cakes a fluffy lift) and vinegar (a natural preservative).
Trick 2
Add a package of pudding mixFor chocolate cake, you can make your own "pudding mix":
Add 2 tablespoons cornstarch, 2 tablespoons baking cocoa, an extra egg, and half a cup of sugar.