Epic White Cake

This is the best White cake....ever

1/2 cup unsalted butter
1 3/4 cups white sugar
4 egg whites
2 tsp pure vanilla extract
2 cups all-purpose flour
1 tsp baking powder
1/2 tsp baking soda
1 pinch salt (if you use salted butter, do NOT add salt)
1 1/2 cup better milk (to make butter milk, for every 1 cup of milk add 1 tbs lemon juice or vinegar.  stir and let stand for 5 minutes)

1. pre-heat oven to 350 F
2. cream butter and sugar.
3. Add vanilla and egg whites
4. in a separate mix together the flour, baking soda, baking powder and salt.  Add to wet mixture.  Add milk and stir well.
5. grease 2 round baking pans.  pour 1/2 the batter into 1 pan and 1/2 into the other.
6. bake for 30 minutes or until done.
7. place on a wire rack to cool.  Allow the cake to completely cook before icing.