Soylent is a sort of "meal replacement drink" where the formula consists of all the nutrients you'd need (or at least that's the idea). Also it's quite cheap compared to regular food and you can create and order your own recipe and mixture. Sounds really intersting. Also maybe a good and cheap way to prep some food that doesn't take up a lot of space too.
So far only available in the US though.
Enjoy the reading though
http://www.newyorker.com/reporting/2014/05/12/140512fa_fact_widdicombe?currentPage=all