Cream together shortening and sugar, add egg, and mix until blended

Sir in banana and starter

Add orange rind OR vanilla

Sift flour, measure again with salt, baking powder, and soda.

Add flour mixture and nuts to the wet mixture, stirring just until blended

Pour into greased 9x5" loaf pan

Bake at 350°F for ~1 hour or until a toothpick comes out clean. Cool before slicing.