2 sticks butter
3/4 c. sugar
1 1/2 c. flour (may need more)
1/2 tsp. baking soda
1/2 tbsp. vinegar

Mix sugar and butter on high for 20 minutes. Add flour. Keep mixer running on slow. Fizz together baking soda and vinegar; add to dough. Drop onto cookie sheet.

Bake at 300°F for 25 minutes or until light brown.