I reluctantly replaced about half of my meals with Soylent while stateside for a few months recently on a visit.

Jake Shake is an EU competitor and, as far as I can tell, has the same nutritional profile and tastes about a million times better than Soylent on its best day. It also comes in single-serving pouches, which is a big win for me because Soylent has to be refrigerated after making it and the colder it is, the less palatable it seems.

I bought supply for several months' with Bitcoin, and it presently serves as 80%+ of my meals (I'm working a lot at the moment).