I don't know where you get that percentage from, but in my experience it is a lot smaller.. I have used quite a few chef's hats (am in the gold league now), but so far have gained 2 Flavor loots (in one go).. I would estimate the chance of winning any is approx 0-5% at best.. therefor (in my opnion) it shouldn't be a requirement in Season quests at all!You can get them in current event with 10-20% chance from most offers which worth fulfilling.
I didn't see any recipe with a 20% chance, only 10% chance of winning 2 packages on 3 or 4 star recipes and only 2% chance of winning 1 on 1 star recipes. Someone with better math ability than me can calculate my chances of gaining enough packets in time to complete the quest.You can get them in current event with 10-20% chance from most offers which worth fulfilling.
I've got 4 out of 41 stars I have now. That's the matter of which offers you fulfill and how much RNG hates you.I have used quite a few chef's hats (am in the gold league now), but so far have gained 2 Flavor loots (in one go)..
There is one group of offers with 20%, far from best one, though.I didn't see any recipe with a 20% chance
Knowing that such quest exists changes the strategy from "open all Loots as soon as you get them" to " have 3 Loots in stock and use them on last week of event" for those who want all SoJ weeklies to be completed (+ there are 2 rerolls per week too).Someone with better math ability than me can calculate my chances of gaining enough packets in time to complete the quest.