There is a chef on station who cooks most of the meals. As a result, everyone gets a good variety of things to eat while living on station. Often there will be a theme night, such as an Indian banquet. On these occasions, not only is the food prepared according to the theme, but many expeditioners will also come in an appropriate costume.
All food is delivered during the summer resupply. In order for it to last for an entire year much of the food is frozen or tinned. Each ship into station will typically deliver “fresh” fruit and vegetables — but these have already been on a ship for several weeks. Stations also have hydroponics in hot house conditions to grow a few fresh vegetables like lettuce and tomatoes. These are used to augment the winter food supplies.
Not all food that is eaten on station can be taken out into the field — for example, poultry (chicken, eggs, turkey). This is to prevent the spread of diseases to Antarctic wildlife, particularly penguins. Antibodies to Infectious Bursal Disease Virus (a disease of domestic poultry) have been found in penguins, indicating they had previously been exposed to this disease.