INGREDIENTS
3/4 cup
unsalted butter, at room temperature
1 1/2 cups
granulated sugar
1 3/4 cups
cocoa powder
3
large eggs, at room temperature
2 1/3 cups
all-purpose flour
1 1/4 tsp
baking soda
1 1/2 tsp
baking powder
1 tsp
kosher salt
1/2 tsp
instant espresso powder
1 1/2 cups
ice water
Nonstick cooking spray
5
sheets gelatin
Ice water, for blooming the gelatin
1 1/4 cups
granulated sugar, plus 2 teaspoons
Generous 1/2 cup corn syrup
6
large egg whites, at room temperature
kosher salt
Splash of lemon juice
Splash of vanilla extract
7 tbsp
unsalted butter, at room temperature
1/2 cup
granulated sugar
3
large egg whites
3/4 cup
plus 1 tablespoon all-purpose flour
1/2 tsp
vanilla extract