c'mon boys, i literally just updated the guide:
"After coming back from the mountains again having completed “the great molescape”, and cooking at least 10 of Parif’s dishes (jams NOT included), this new quest is triggered the next time you enter the kitchen while he is present."
the 4 routes are paying Chet, asking Flo, Axel or advisor Red in the tribes, i explain all the details on there, press CTRL+F and search "a feast for a beast".