The stuff:
For the cake:
Nonstick cooking spray
9 ounces cake flour, approximately 2 cups
1 teaspoon baking powder
1/2 teaspoon kosher salt
1/2 teaspoon ground ginger
2 ounces unsalted butter, room temperature
5 1/4 ounces sugar, approximately 3/4 cup
1 large egg
1/2 cup whole milk
15 ounces fresh whole blueberries, approximately 3 cups