Preheat oven to 400 degrees. In a large bowl, cream the butter and sugar; add in the eggs. Combine the flour and baking soda. Sift once, and to the creamed mixture alternately with 1/3 C. of the lemonade concentrate. Mix well. Drop by rounded teaspoonfuls onto ungreased baking sheets. Bake for 8 minutes. Remove to wire racks. Brush with remaining lemonade concentrate; sprinkle with some additional sugar while warm. Cool.

Yield: about 6 dozen