>>56101725They're kinda not worth the effort. They're a pain to gather in the first place, and they're used in (admittedly good) dishes that need ingredients that don't synergize too well with other ingredient gatherers.
They work best on Taupe Hollow where you can set up a Dugtrio that gathers tomatoes and leeks (and beans at 60), and can run a Typhlosion that gathers ginger and herbs. This will let you make Spicy Leek Curry fairly regularly.
Ninja Curry and Ninja Salad needing mushrooms, there's no way around that you gotta add a Gengar.
Leeks are the worst ingredient to gather that aren't Slowpoke tails. I unlocked them using a ditto with a single Leek drop and the rest I've ever collected have been from ingredient magnet S or tickets.
For some reason, ingredient magnet/tickets seem far more likely to give me Slowpoke tails than leeks.
