How to use the royal icing wet-on-wet technique on a cookie

The wet-on-wet royal icing technique is a simple one, but you have to move quickly in order to achieve the desired effect. This technique is called wet-on-wet because the designs (roses in this case) are applied while the base layer of icing is still wet, which allows the design to dry flat and smooth. If you don’t pipe your designs in time, the base layer of icing will start to dry and you’ll end up with wrinkles and bumps. You’ll usually about 5 minutes from the time the base layer is piped until it start