Cover bottom of 9 x 9-inch pie pan with vanilla wafer crumbs. You may add 1/2 cup nuts if you wish.

Beat until stiff - (about 10-15 minutes) :

2 egg whites
2/3 c. sugar
1/4 c. lemon juice
4 drops yellow food coloring

Fold in 1 cup whipped cream and pour into pie pan. Freeze.