"This enormous New York City deli favorite begins with a cakelike â??cookieâ? bottom. Our glaze needed milk for flavor but required the addition of just enough corn syrup to make it thick enough to rest on top of the cookies instead of sinking in and disappearing...."
INGREDIENTS
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1 3/4 cups(8 3/4 ounces) all-purpose flour,1/2 teaspoon
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baking powder, 1/4 teaspoon
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baking soda, 1/8 teaspoon
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salt, 10 tablespoons
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unsalted butter softened, 1 cup (7 ounces)
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granulated sugar, 1 large egg, 2 teaspoons
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vanilla extract, 1/3 cup
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sour cream, Glaze:5 cups(20 ounces)
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confectioners' sugar,sifted, 7 tablespoons
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whole milk,2 tablespoons
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corn syrup,1 teaspoon
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vanilla extract,1/2 teaspoon
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salt,3 tablespoons
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Dutch-processed cocoa powder,sifted