For a spicier kick, add a pinch of cayenne pepper to the batter. If you don't have self-rising flour, you can use all-purpose flour and add 1 1/2 teaspoons of baking powder and 1/2 teaspoon of salt to the dry ingredients. These hush puppies are best served immediately while they are still warm and crispy. However, you can reheat them in the oven or air fryer for a few minutes to restore their crispness.