INGREDIENTS
1 1/2 cups
Blueberries
1 1/3 tbsp
Lemon, zest
1
Lemon buttercream
3
Egg whites
5 tbsp
Lemon juice
1 2/3 cups
All purpose flour
1 tsp
Baking powder
3/4 tsp
Baking soda
4 cups
Powdered sugar
1/2 cup
Shortening
1 cup
Sugar
3/4 tsp
Vanilla
1
Cupcakes
3/4 cup
Butter, salted
1/2 cup
Butter
1/2 cup
Milk
1/2 cup
Sour cream