Raspberry Yogurt Torte from Kaffeehaus: Exquisite Desserts from the Classic Cafes of Vienna, Budapes

Ingredients

• 6 tablespoons framboise (raspberry eau-de-vie)
• 1¼ teaspoons unflavored powdered gelatin
• ¼ cup water
• 4 teaspoons unflavored powdered gelatin
• 1¾ cup water
• ⅓ cup water
• 3 tablespoons sugar
• 1 tablespoon finely chopped pistachios, for garnish
• Four 6-ounce containers fresh raspberries, divided
• 1¾ cups sugar
• 2 tablespoons fresh lemon juice
• 1 or 2 drops red food coloring, optional
• 1 cup heavy cream, chilled
• 2 cups plain whole-milk yogurt
• Small Sponge cake