2 cups plus 6 tablespoons all-purpose flour

2 teaspoons baking powder

1 teaspoon salt

3 cups fresh blueberries

1/2 cup sour cream

1/2 cup whole milk

2 teaspoons vanilla extract

3/4 teaspoon pure lemon extract

1 teaspoon lemon zest

1 cup (2 sticks) unsalted butter, room temperature

1 1/2 cups white sugar

4 large eggs