• 3 tablespoons instant coffee powder
• 1 tablespoon vanilla extract
• 1 1/2 cups all-purpose flour
• 3/4 teaspoon baking soda
• 3/4 cup chocolate chips
• 2 teaspoons white vinegar
• 2 cups unsalted butter, room temperature
• 1 teaspoon vanilla extract
• 4 1/2 cups confectioner's sugar