Sugar Cookies - cooking recipe

Ingredients

4 c. flour
1 tsp. baking soda
1/2 tsp. salt
1 1/2 c. sugar
1 1/2 c. shortening or oleo
1/2 c. sour milk or buttermilk
1 tsp. vanilla
2 eggs

Preparation

I put vinegar in milk and let it stand 5 minutes until it curdles.