itch.io

It should be fixed now. The NPC near the first door should give you the recipe. (The one that says "Maybe not everything is lost after all...")
Can you confirm that the problem is gone?

Thanks for trying out our game!

You got stuck on the second door puzzle right?
Can you be a bit more specific?
Did you get the recipe from the NPC near the first puzzle door? You can see your known recipes by pressing TAB.