INGREDIENTS
1
Egg, large
1
Egg yolk
1 tsp
Baking powder
1 tsp
Baking soda
2 cups
Confectioners' sugar
3 tbsp
Cornstarch
1 1/4 cups
Granulated sugar
2/3 cup
Potato starch
1/4 tsp
Salt
1 pinch
Salt
2/3 cup
Tapioca starch
3 tsp
Vanilla
1 1/3 cups
White rice flour
1 1/2 tsp
Xanthan gum
1/2 cup
Canola oil
1/4 cup
Butter, unsalted
3 tbsp
Heavy cream
1/4 cup
Sour cream
colour - optional