soylent
An undesirable, lackluster, and artificial foodstuff, as a substitute for real meat.
uncountable
The soylent steaks were sitting like lead in his stomach and twice he had to go back to the dark and miserable toilet in the rear of the building.
Where it comes from
Blend of soy + lentil, coined in Harry Harrison's 1966 Make Room! Make Room!
Adapted from the Wiktionary entry soylent (CC BY-SA 4.0).