Cream sugar and margarine. Add bananas and eggs. Sift flour, salt and baking soda Three Times. Blend flour mix into banana mixture. Do Not Overmix. Turn batter into two greased 9x5x3 inch loaf pans. Preheat oven to 350 degrees. Bake bread for 55 minutes or until toothpick tests dry in center of loaf. Turn out immediately to cool on wire rack.