Quick-setting, microwavable icing covers your cookies with a shiny finish, perfect for decorating with colorful Wilton Icing Write accents. Just heat and squeeze using the convenient, easy-to-use dispenser. Sets smooth in 45 minutes. Icing is certified kosher. 10 oz. Features Just heat and squeeze onto cookies using the convenient cap. Sets smooth in just 45 minutes. 10 oz. bottle covers approx. 12 cookies 3 in. each. Certified Kosher.