I think I remember this being a joke from Futurama. Based on what I remember, wouldn't this would work better as boomer bile?

The 100% Natural - No Artificial Flavors, really makes my skin crawl.

This was a terrific idea! For those who don't know, Soylent Green was a 1970's movie starring the late, great Charlton Heston. In the movie the government was distributing food in a future where the Earth was overpopulated. In fact, things were so bad old people were encouraged to "Go Home" by taking a poison supplied to them for free by the government. The newest of the foods sold under the name Soylent (which was in cracker form), was called Soylent Green. But the government didn't tell the people what it was made from: people!

i would say its "man-made"