In Guild Wars 2, oftentimes (especially during the current Wintersday event) you get recipes that you have already unlocked. Typically, I just sell them. I recently learned that runes and sigils that you don't need can be used in the Mystic Forge, so that makes me wonder: Is there currently any use for unlocked recipes?
Most recipes are not soulbound, so you can either:
- Sell on Trading Post
- Announce a giveaway on the Guild
Assuming that you already have a certain recipe, on a specific character, you can't "re-learn" it, so double-clicking it again won't work. There are new recipes once in a while (like the ones you can loot from Silverwastes), which makes it "harder" for newer players to catch-up with the releases. This is why I usually announce on Guild before selling it (mainly because 99% of the recipes will worth a few copper only, so why not give away?)