Raspberry Chocolate Meringue Icebox Cake

1. Preheat oven to 250F. Line 2 baking sheets with parchment paper and
trace 3 8-inch circles onto the paper.

2. In a large bowl with an electric mixer beat whites with cream of tartar
and add a pinch of salt until they just hold soft peaks. Add 1 cup sugar
gradually, beating, and beat meringue until it holds stiff peaks. Transfer
meringue to a pastry bag fitted with a 3/4 inch plain tip and pipe onto
circles, filling them in. Smooth meringues with a long metal spatula or
knife. Alternatively, if pastry bag isn’t used, circles may be made by
spreading meringues freehanded with spatula.

3. Bake meringues 30 minutes and switch positions of baking sheets in oven.
Bake meringues 30 minutes more, or until pale golden and crisp. (If the
weather is humid, cooking time may be longer.) Cool meringues completely
and peel off paper. Meringues may be made 1 day ahead and kept in
turned-off oven.

4. In a saucepan, bring 1/4 cup heavy cream just to a boil and remove from
heat. Add chocolate and stir mixture until chocolate is melted completely.
Divide ganache between 2 meringue layers and gently spread evenly, leaving
1/2 inch borders. Chill ganache until hardened, about 10 minutes.

5. In a small saucepan, sprinkle gelatin over water and soften 1 min. Heat
mixture over low heat, stirring until gelatin is dissolved, and keep warm.
In a bowl with an electric mixer, beat remaining 2 1/2 cups heavy cream
with remaining 1/2 cup sugar until it just holds stiff peaks and then beat
in sour cream and vanilla. Add gelatin mixture in a stream, beating, and
beat until mixture holds stiff peaks.

6. Arrange 1 ganache-topped meringue on a plate and spread it with 1 1/2
cups cream mixture, mounding it at the edge. Arrange 1 pint of raspberries
over the cream mixture and top with the second ganache- topped meringue.
Repeat procedure with about 1 1/2 cups more cream mixture and another pint
of raspberries and top with the third meringue.