Inside Shackleton's Hut - 2
Much of the food that was eaten was tinned as somewhat ironically frozen food was in it's infancy in the first decade of the 20th century. Modern Antarctic bases still rely heavily on tinned food, but also much more on frozen and with modern transportation, fresh food is not such a rarity.
On the other hand - the fresh food the early explorers had, seal meat, penguin meat, wild birds eggs etc. are completely off the menu for today's expeditioners.
Photo; © Mike Usher - Pictures from an icebreaker cruise to Eastern Antarctica.