Blueberries have a tendency to sink to the bottom of the cake. BUT WHY DO MY BLUEBERRIES SINK? Answer is simple .. GRAVITY. Anything additional added to a cake whether be chocolate chip, blueberries, or any other berries or nuts they will sink to the bottom of the cake because of gravity.
To stop them from sinking just follow this simple Blueberry Cake Tip. Before adding all of the flour to the wet ingredients, save some and coat blueberries with it.
This coating will absorb some of the liquid released from the fruit preventing it to sink to the bottom of the cake. Also this dry flour will keep the blueberries stick to the batter and they will stay put where they were mixed in.
Blueberries will turn cloudy when you add flour to it. Fold them gently by bringing the batter from the bottom to the top and vice versa. Do this gently as this will prevent blueberries from breaking apart.