After defeating one of the Tower of Two Fists, you will return to the Dojo to find Hop talking with Mustard. Hop will ask Mustard if he can stay at the Dojo, and Mustard accepts. Mustard will then go on to say that Urshifu has Gigantamax Form that it can achieve by the way of Max Soup, but a special Max Soup that has an additional ingredient. Mustard won't remember what that ingredient is, but Hop has a good idea that it's Sticky Honey. With that in mind, the two of you will go to the Forest of Focus to find some nectar. To start your hunt, you will have to find Lilligant and return it to the lost Petilil. You will receive nectar after you do, but Hop will deem it not the correct ingredient. From there, you and Hop will have to find and chase down Applin, but its nectar won't be correct either.