2 egg whites (at room temperature)
pinch of salt
3/4 c. sugar
1/2 tsp. cream of tartar
1 1/2 c. chocolate chips
1 tsp. flavoring

Beat egg whites and salt, adding sugar a little at a time. Beat until mixture is very stiff. Add cream of tartar and fold in chocolate chips and flavoring. Preheat oven to 375°F for 15 minutes. Drop cookies on ungreased cookie sheets. Turn off oven. Put cookies in oven and leave overnight or at least 6 hours. (Do not open oven.)

Makes about 3 dozen.