Pohl andKornbluth wrote about factory meat in their story SpaceMerchants. Referenced here.
and the story of the geek and the dinosaur egg is from Asimov's "A Statue for Father".
and this PopSci article discusses what part of the dinosaur to eat, and notes that the flavor of meat depends on what it's been eating...
Most people prefer meat that comes from herbivorous animals—think cow, deer, bison— since animal fat found in a carnivore's diet adds a significant amount of "gamey" flavor. And some dinosaurs' diets are far too unappetizing to consider.
"When people ask me if a T-Rex would be good, well, I don't think so," David Varricchio, professor of paleontology at Montana State University, says. "They've found jaw abnormalities that suggests they were eating fetid meat and had diseases that came about from prey items. They would be pretty parasite-laden."
aggh! Parasites! Don't eat him he has parasites...
Uh, fellahs: the parasites are killed by COOKING.LINK
So Bilbo stopped him from eating Bombur raw, but not from eating him in a stew or roasted.
As for the "sage": the reason the world went nuts trading for pepper etc. was to improve the flavor of food...
CSMonitor article on neolithic spices. more on the ancient spice trade HERE and HERE.