INGREDIENTS
1/2 tsp
baking powder
1/2 tsp
baking soda
1 3/4 cups
cake flour
2 tsps
cornstarch
1/3 cup
dark brown sugar
1 large
egg
1 large
egg yolk
1/3 cup
granulated sugar
1 tsp
ground cinnamon
1/2 tsp
ground ginger
1/2 lb
rhubarb
1/8 tsp
salt
1/3 cup
sour cream
1/4 cup
sugar
2 tsps
vanilla extract