Well, I think you can look for the craft of Restrain Potion and make it in the hut until the "craft" option is available (it means you mastered it). It's not really necessary to learn it, you just have to know how to do it and will automatically appear in the recipe list once mastered.
(Red berry in 1-5 spot and nut in 2-4. I think)
(English is not my first language, sorry for any misspelling)