1 lg. box orange Jello, sugar free
1 (6 oz.) can mandarin oranges, drain, save juice
1 c. lite Cool Whip

Prepare Jello using basic directions on box. Use mandarin juice for some of the water. Put in bowl deep enough to use electric mixer. Chill until partially jelled. Beat with electric mixer until light and fluffy. Add mandarin oranges and Cool Whip. Chill and serve.