Combine flour, salt and baking soda and whisk or sift to mix well. Set aside. Cream butter, sugar, eggs together and fold in bananas. Mix together the milk and the lemon juice- it will curdle a little. Add this to the wet mixture. Slowly fold, in stages, the dry with to the wet. Blend well. Pour into baking cups (or, if preferred, a well greased 9x5x3 bread pan) Bake for 350*F for one hour.