Name: Black and White Cookies
Prep time: 25 min
Cook time: 15 min
Total time: 40 min
Yield: 8 cookies
Ingredients: 1 1/4 cups all-purpose flour; 1/2 teaspoon baking soda; 1/2 teaspoon salt; 1/3 cup well-shaken buttermilk; 1 teaspoon vanilla; 1/3 cup unsalted butter (, softened); 1/2 cup granulated sugar; 1 large egg; 1 1/2 cups powdered sugar; 1 tablespoon light corn syrup; 1 teaspoon fresh lemon juice; 1/4 teaspoon vanilla; 1 to 2 tablespoons water; 1/4 cup unsweetened Dutch-process cocoa powder