Thaw berries. Put half of each of the 4 ingredients in a large mixing bowl. Beat at the highest speed until thick and fluffy - should almost reach top of the bowl and make firm peaks*. Pour into 3 quart plastic container, cover tightly and freeze. Repeat with other half of ingredients. Once frozen does not need rebeating. Use ice cream scoop to serve. Does not need to be thawed prior to serving. Makes 20 servings.
