Dissolve 1 (3 ounce) package of strawberry Jello in 2 cups boiling water. Pour into 3 quart glass bowl. Refrigerate until firm. Dissolve 1 envelope of unflavored gelatin in 1/2 cup cold water. Set aside.

Over low heat, carefully dissolve 1 cup sugar in 1 cup whipping cream, heat, stirring constantly, until mixture nearly boils. Remove from heat, add unflavored gelatin mixture. Cool.

Blend in 2 cups sour cream and 1 teaspoon vanilla. Pour over first layer. Refrigerate until firm. Dissolve 1 package of raspberry or black cherry Jello in 1 cup boiling water, cool. Add 1 can blueberries and juice. Pour over second layer; refrigerate until firm. Yield: 10 servings.