Sky High Chocolate Mousse Pie

Bahan-bahan (8 porsi)

• 22 regular Oreo cookies (not Double Stuf)
• 5 Tablespoons (71g) unsalted butter, melted
• 8 ounces (226g) unsweetened chocolate, finely chopped (two 4-ounce bars)
• 2 Tablespoons (28g) unsalted butter
• 4 large egg whites* (120g)
• 1 cup (200g) granulated sugar
• 1/4 teaspoon cream of tartar*
• 2 cups (480g/ml) heavy cream, cold
• 6 whole Oreos, crushed into crumbs (68g)
• 1 cup (240g/ml) heavy cream, cold
• 2 Tablespoons granulated sugar
• 1/2 teaspoon pure vanilla extract
• optional: chocolate curls or shavings for topping*