INGREDIENTS
1
Egg, large
7 1/2 cups
All-purpose flour
1 cup
All-purpose flour, unbleached or bleached
1 tsp
Baking powder
1/8 tsp
Baking soda
4 1/2 cups
Brown sugar, packed dark
5 tbsp
Cinnamon, ground
2 tsp
Salt
1/2 cup
Sugar, superfine or strained
4 1/2 tsp
Vanilla
3 5/16 cups
Butter, unsalted
1/2 cup
Sour cream