Preheat oven to 180 degrees (356 F)
soak raising in 75ml of rum
sift flour, baking soda and baking powder into a bowl with cinnamon and nutmeg
Mix room temperature butter and sugar until creamy
Add lemon juice or vinegar to milk, it will curdle
Add milk, eggs, mashed bananas, salt, vanilla extract to butter and mix thoroughly
Add banana mixture, with raisins and rum to flour mixture and fold until completely incorporated (wet to dry)
Grease loaf tin with butter and add the batter (there should about 1.5 inch space between batter and top of tin as the banana bread will rise)
Bake banana bread for 50 mins (test with a toothpick, you want a clean pick once cooked)