PLAIN CAKE

In a bowl measure flour, baking powder, and milk powder.
In another bowl measure icing sugar. In another bowl measure butter.
Beat butter and icing sugar and make it fluffy.
Beat it well for at least 10 minutes.
Then add in lemon juice, one by one egg, and beat continuously.
Then add in flour, baking powder, milk powder, salt and beat well.
grease the cake pan and pour the batter in it and bake it.