"To keep the rolled dough's cylindrical shape, chill or freeze it inside empty cardboard paper-towel tubes...."
INGREDIENTS
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2 1/2 cups all-purpose flour
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1/2 teaspoons kosher salt
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1 cup (2 sticks) unsalted butter, room temperature
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3/4 cup sugar
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2 tablespoons finely grated lemon zest
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1 teaspoon vanilla extract
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4 large egg yolks
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1 1/4 cups powdered sugar
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2 tablespoons (or more) fresh lemon juice
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Food coloring (optional)
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Sanding sugar (optional)