Chocolate Ice Cream Cone Cupcakes

INGREDIENTS

• 1/2 cup boiling water
• 2 oz (57 g) unsweetened chocolate, chopped
• 3 tablespoon (25 g) cocoa powder, natural not Dutch-processed
• 1/2 cup (115 g or 1 stick) unsalted butter at room temperature
• 1 cup (220 g) dark brown sugar
• 2 tablespoons (25 g) white granulated sugar
• 1 large egg
• 1 large egg yolk
• 1 teaspoon baking soda
• 1/4 teaspoon salt
• 1 cup (135 g) cake flour
• 1/3 cup Greek style yogurt
• 1 teaspoon vanilla extract
• 5 large egg whites
• 1 cup + 2 tablespoons (225 g) granulated white sugar
• 1/2 teaspoon salt
• 455 g (2 cups or 4 sticks) unsalted butter at room temperature
• 2 teaspoon vanilla extract
• 1 vanilla bean
• 18 cake cones
• 12 Maraschino cherries (optional)
• sprinkles