Perfect Sugar Cookies

This is my mom's recipe and a family favorite. Actually, a favorite of anyone that tries them. They are also my go-to holiday cookie (if you can't tell). If there's a holiday, we usually have an excuse to make these cookies.

Recipe:
1 c sugar
1 c brown sugar
1 c margarine
1 tsp vanilla
3 eggs
1 c buttermilk (you can make you own by mixing 1 T lemon juice into milk and letting it sit and curdle for 5 minutes)
1 tsp salt
2 tsp baking powder
2 tsp baking soda
6 c flour (this isn't exact, add 5 and then check the consistency of your dough)

Cream sugars, margarine, eggs, vanilla and milk. Add sifted dry ingredients until you get a stiff dough. Don't add too much flour! Refrigerate the dough for several hours or overnight. Roll out on a floured surface and cut into shapes. Bake on greased cookie sheet for 10 minutes at 350 degrees. Then frost and decorate. Have fun!