Sour Cream Sugar Cookies

Thanks to my friend Lara who shared this recipe with me years ago.
1 c. shortening
1 3/4 c. sugar
1 c. sour cream
2 eggs
1 t. vanilla
4 c. flour
1 t. soda
1/2 t. salt
1 t. baking powder

Cream sugar and shortening.
Add eggs, sour cream, and vanilla.
Mix in dry ingredients.
Chill 1 hour.
The dough will be very sticky so use lots of flour when rolling them out. Roll to approx. 1/4"
Bake for 8-10 minutes at 375* (a few more minutes at high altitude.)