Unopened, aseptically sealed packages of UHT milk can be stored on shelves without refrigeration for up to three months. UHT milk has a “cooked” flavor at first, which tends to disappears with storage time. After one year, UHT milk develops off-flavors described as sweet, flat, musty, rancid and chalky. Chilling UHT milk before serving improves its taste. Once opened, UHT milk must be refrigerated and handled with the same care used for fresh milk. Although it is slightly more expensive than fresh milk and not widely distributed, UHT milk is ideal for boating, camping, hiking, and other situations where refrigeration is not always available.