1 c. brown sugar
1 c. white sugar
1 c. oil
1 c. Crisco

Blend. Add remaining ingredients in order given:

2 eggs
4 c. flour
2 tsp. baking soda
4 tsp. cream of tartar
2 tsp. vanilla
1 tsp. salt
12 oz. chocolate chips

Drop on greased cookie sheet. Bake 8-10 minutes at 350 degrees.