What am I doing wrong if my cakes are sinking in the centre?

Cakes that don't have a raising agent, i.e. those made with plain flour, can still sink, but the effects won't be as noticeable. Cakes rise because the raising agent reacts with other ingredients and the heat of the oven to create little air pockets in the cake mixture that expand in the oven. read more

Since pound cake is generally a soft type of cake, it can sink really easily if you don’t measure or add the right ingredients . You’re not adding the right amount of baking powder or soda. Baking soda and/or baking powder are the rising ingredients to pound cake. If the amount is increased or decreased than normal, it can cause the cake to sink. read more