Despite most people saying fishing, i actually love the fishing minigame. What I dont like is the cooking aspect, but only because it feels like it is tacked on the game. I wish there was a cooking skill in the base game, with integrations into other mechanics, events, story, etc. But after automating a lot of the farm with sprinklers, huts, etc, and getting stardrops, its almost difficult to run out of energy quick enough to need food. That is, unless you're doing a day-long dungeon run.
I realize there is a mod for what cooking additions I'd like to see, but i typically stay away from mods that are overhauls so that my savegames don't have any excuse to get corrupted.