When possible, purchase your strip loin or rib eye in the vacuum packaging. It is very important that the entire surface of your strip loin, rib eye, or top butt/sirloin is coated with the type of thick, sticky proteins that are on it when it is first removed from the vacuum packing in which your beef supplier received it. Do not rinse, wash or dry the surface of the beef. If your beef is wiped dry, you will be less successful sealing and bonding UMAi Dry® material. Furthermore, you may introduce contaminants or bacteria with such a "cleaning" process.