Barricadus recipe

Where I can find barricadus recipe please ???

Here is where you can find Barricadus recipe and others:

Thank you but I don’t understand I have finished all the quest but I don’t know the quest whose speak your link
Sorry if my english is bad I’m french

I also finished the game and all quests. I was not able to find Barracidus recipe. I ended up having to buy it. My guess is that it is a bug.

If y’all haven’t seen this, try and see if this is the problem: