black and white cookies

INGREDIENTS

• 1 3/4 cups granulated sugar
• 1 cup unsalted butter (2 sticks), at room temperature
• 4 large eggs, at room temperature
• 1 1/2 cups milk
• 1/2 teaspoon vanilla extract
• 1/4 teaspoon lemon extract
• 2 1/2 cups cake flour
• 2 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 4 cups confectioners’ sugar
• 1/3 to 1/2 cup water
• 3 ounces very bitter or unsweetened chocolate
• 1 teaspoon light corn syrup
• 1 to 2 tablespoons unsweetened cocoa (optional)