>>55983208Slowpoke Tails may have the best strength out of all ingredients at 342 each, but a baseline Slowbro only has about a 10% chance of gathering a single Slowpoke tail per helping.
80% of the time, it's gathering an Oran berry instead.
If you maximise its ingredient finding chances, that only increases to an 18% chance of getting a tail.
I doubt this is going to be worth it even with an ideal Suicune set up, with Helper Boost getting a maximum 11 helpings per helper.
You're only likely to get 2-3 Slowpoke tails per skill trigger.
Slowpoke tails may have compact strength if you're somehow able to stuff a load of them into a Sunday dish and get an extra tasty result, but the trade off is just having less overall strength gained during the week, something that a proper ingredient specialist could do.