Mash bananas (over-ripe make the best bread). Add the oil and sugar and mix well.
Sift flour, salt and soda together and add to banana mixture. Mix until flour is blended in but do not overmix.
Grease a loaf tin and add mixture. Bake at 180C for 45-60 minutes or until a fine skewer inserted in the middle comes out clean.
Cool for 10 minutes in the pan, then cool completely on a wire rack before cutting.