Strawberry Pie - cooking recipe

Ingredients

3 egg whites, beat dry
1 c. white sugar
1/2 tsp. vanilla
1 tsp. vinegar
1 qt. strawberries
1/2 pt. Cool Whip

Preparation

Mix first four ingredients together and bake in a large pie dish at 250\u00b0 for 1 1/4 hours.
Cut top off after cooled.
Stir berries and Cool Whip together and put on crust.
Top with crust that you cut off.
Chill for 3 hours.