Vivian'S Chocolate Cake - cooking recipe

Ingredients

2 c. sugar
2 eggs
1/2 c. shortening
6 Tbsp. cocoa
2/3 c. sour milk*
2 tsp. baking soda
2 tsp. salt
2 c. flour
2 tsp. vanilla
1 c. boiling water

Preparation

*To make sour milk:
Take 1/4 cup of vinegar, then fill cup to 2/3 more with milk.