"The classic high-summer beverage in icebox cake form...."
INGREDIENTS
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1/4 cup (21g) Dutch-process cocoa
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3/4 cup (90g) King Arthur Unbleached All-Purpose Flour
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1/2 teaspoon espresso powder
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1/4 teaspoon salt
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1/4 teaspoon baking powder
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6 tablespoons (85g) unsalted butter softened
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1/2 cup plus 2 tablespoons (124g) granulated sugar
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1 large egg white
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1/2 teaspoon King Arthur Pure Vanilla Extract
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2 cups (454g) heavy cream or whipping cream
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3 tablespoons (19g) confectioners' sugar
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1 1/2 teaspoons espresso powder
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1 teaspoon King Arthur Pure Vanilla Extract
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pinch of salt
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chocolate bar for shaving