Red Devil's Food Cake

2 c cake flour
1-1/4 t soda
1/4 t salt
1/2 c shortening
1 c sugar
2 eggs
2 sq chocolate or 6 T cocoa
3/4 c sour milk (or 3 t vinegar in 3/4 c sweet milk
1 t vanilla
1/3 c boiling water

Sift, then measure flour. Sift 3 times with soda & salt. Cream butter until lemon colored. Gradually add sugar. Add eggs that are well beaten. Combine milk and vanilla. Add boiling water & beat well. Bake 45 min. at 350°