At one point Mark Watney was having 1 potato (roughly) every three days lol. I dont think weight/size would be an issue lol.
I wonder if the e-coli bacteria could have even been present? The entire crew and food would have been pretty sterile before leaving earth. He was a botanist, so worked with what he knew, and the only slurry he knew that would work was freeze dried human waste, where again any bacteria should have been destroyed - I wonder if the slurry would have been potent enough for it to actually work.
hmmm more questions now.....
