Butter Mint Patties

Blend butter, syrup, vanilla, and salt in a large mixing bowl.  Add sifted powdered sugar all at once.  Mix together, first with sppon, then with hands kneading well.  Turn out onto a board and continue kneading until mixture is well blended and smoot.  Shape  into whatever shape you want and let air dry somewhat.  You may need to flip them over and air dry some more.  Store in a tight container in a cool place.  You can add food colr and other flavers as desired.