Sift flour, soda and salt together. Cream shortening and sugar, add eggs and beat until fluffy. Add dry ingredients and mashed bananas and buttermilk. Add 3/4 cup nuts.
Turn into greased 9 x 5 or 9 1/2 x 5 1/2 oaf pan. Bake 350 degrees 60 minutes or until inserted toothpick comes out clean. Oven temps vary, so start checking doneness after 45 - 50 minutes.