Cream sugar and butter until fluffy, add sour cream and eggs.
Beat until well blended.
Reserve 1 tablespoon orange concentrate for frosting; add the remaining concentrate with combined dry ingredients to creamed mixture.
Mix well. Stir in orange peel.
Drop by rounded tablespoon onto lightly greased cookie sheet
. Bake at 350 degrees for 10 minutes or until edges just begin to brown.
Remove from cookie sheet and allow to cool on wire rack before frosting. Instructions for frosting: Cream sugar and butter until fluffy.
Combine remaining ingredients and beat until smooth. Spread small amount over each cookie
