3/4 c. sugar; less if using frozen berries with sugar
2 egg whites
2 c. frozen raspberries (partially thawed)
1 tsp. vanilla
1 tbsp. lemon juice
Pinch of salt
1 c. whipped cream, whipped
1 (9") baked pie crust

Combine first 6 ingredients in large mixing bowl. Beat at high speed 15 minutes, until thick and voluminous. Fold in whipped cream and place in baked pie shell. Freeze several hours. Wrap frozen pie in foil. Will keep a few days in freezer.