Separate egg whites from yolk ,it helps to do one egg at a time in a different bowl,in case you break the yolk. you do not want yolk in your whites. then throw away yolks. In a mixing bowl add the egg whites from 10 eggs and beat on high speed,until they are stiff. Slowly add the 1 1/4 teaspoons of cream of tartar and 1/4 teaspoon of salt continue beating for about one minute..