FTB Quests added this super useful feature that you can add to the JEI bookmarks section from the quest screen, but personally I'm building my modpack around Patchouli, and it would be awesome if you could hover over items in the book and press 'A' to add it to your JEI bookmarks.

I just added recipe lookup support for 1.18, but no favorites yet because JEI doesn't have any api for adding them, will add when that is doable without reaching into internals.