There is disclosed a novel apparatus for use as a beverage container glass door merchandiser. The apparatus includes an insulated enclosure, the enclosure having an outside and an inside and at least partially defining a drain (84) from the inside to the outside. A Stirling cooler (10) has a hot portion (28) and a cold portion (26). A heat-conducting member (78, 82) is disposed inside the enclosure and is connected in heat exchange relationship to the cold portion (26) of the Stirling cooler (10). The heat-conducting member (78, 82) is also operatively associated with the drain (84) such that condensation on the heat-conducting member (78, 82) can flow out of the enclosure through the drain (84). A method of cooling an insulated enclosure is also disclosed.