Cream butter and sugar, add beaten eggs, salt, mix well. Add vanilla. Dissolve the soda and powder in the sour cream,(yogert, buttermilk can be substituted for sour cream), add to first mixture. Stir in banana pulp, add flour gradually. Mix in Chips. pour into buttered and floured baking pan, or spray with pam. bake at 350 for 90 minutes. Freezes well. Bake muffins for 20 minutes.