INGREDIENTS
2 1/8 cups
white sugar
2 cups
butter, softened
4
eggs
6
egg yolks
1 1/2 tsp
vanilla extract
7 cups
all-purpose flour
1 tbsp
baking powder
1/2 tsp
salt
4 cups
confectioners' sugar
1/4 cup
vegetable oil
1/2 tsp
vanilla extract
1 tbsp
hot water or as needed