The movie glossed over some details. In the book, Soylent was a variety of different things, with a soya and lentil base (hence the name), and only Soylent Gree

The movie glossed over some details. In the book, Soylent was a variety of different things, with a soya and lentil base (hence the name), and only Soylent Green specifically was the problematic one, it being the newest release. (I haven't read it myself, just summarizing what was discussed in the last thread.)