1 1/2 cups 7-Up
2 small boxes strawberry gelatin
2 (10 ounce) packages frozen strawberries
1 cup crushed pineapple, drained

Bring the 7-Up to a boil in a pan; remove from heat.

Partially thaw 1 of the packages of frozen strawberries. In a large bowl, mix strawberry gelatin, strawberries and pineapple. Add boiled 7-Up. Mix well and chill in a serving container.

Topping
2 cups miniature marshmallows
2 (8 ounce) carton sour cream

Mix and refrigerate all overnight or until serving time. Top gelatin salad just before serving.