Self-rising flour may ONLY BE USED in place of all purpose flour only if recipe you are making calls for salt and baking powder. When using self-rising flour in place of all purpose (A.P.) flour omit salt and leavening as indicated in amounts shown above. One problem with self-rising flour: you can never be sure of the efficacy of its built-in leavener (baking powder). Long or improper storage will weaken its leavening power and may affect the final produce adversely.