Javier is regularly extracting his thermos so that he can consume his traditional mate (Argentinian tea), where ever he goes. He explains the ritual involved with mate and a little about those things from home that he's not able to bring with him. Check out Javier's blog, where he writes about food and cooking in South America.
Karina is lucky enough to come from Rio, in Brasil. I spoke to her while she was travelling around Peru and the rest of South America about the heat she misses and the interesting way fellow South Americans (particularly males) will commonly respond to her nationality with unwanted attention.