in a bowl, combine both the flour, salt, baking powder and soda
in another bowl beat butter and both the sugar
add mashed banana, diluted coffee, essence and dry mixture
gradually add milk and make a smooth batter
line the muffin mould with paper cups
pour the batter to the mould and place in preheated oven
bake at 180c for 25 minutes
remove from oven and cool on wire rack
your muffins are ready to serve