Mom's Valentines Cookies

1/2 cup shortening
1 cup sugar
2 eggs
3 cups flour (or more)
4 tsp. baking powder
1/4 tsp. salt
1/4 tsp. baking soda
1/2 cup sour milk or sour cream
1 tsp. vanilla

Cream shortening and sugar. Add eggs and beat well. Mix in vanilla. Add all dry ingredients and milk or sour cream alternately. Roll dough 1/4 inch thick. Cut with heart cookie cutters. Bake @375 degrees for 6 to 8 minutes. Cool, frost (with cream cheese frosting of course) and decorate.