Thanks to the Instapundit link, I've discovered the fascinating Soylent nutrition supplement/replacement experiment - a sort-of Open Source science project.
Mr. Robert Rhinehart of San Francisco had the inspiration to try to meet the human body's (well, his body anyway) nutritional needs directly from the basic chemical components - without all the "packaging" nature puts all of that in. He hasn't revealed the exact percentages of the components mix yet (with certain exceptions; it seems several people with the requisite chemistry training worked it out for themselves too and they are cooperating together now from what I have read), but has stated the basic objective to be marketing of a nutritional supplement that can (mostly, it depends on the individual) replace the requirement for traditional "food" and can do so for anyone having access to potable water and a container to mix the two together.
There is a discussion board now, plans for a kickstarter type effort in the near future and the opportunity to participate in making the future.
To appropriate the Heinlein phrase, this is opporknockity tuning in to your wavelength; don't miss out.