You can craft this bombs with:
- Tor Gvalcha: Second quest mark on right, close to water (i hope someone can maybe write this better then me),
- Ancient Crypt: After "The Sunstone" in a chest along the path leading towards the exit.
- Arnskrone Castle Ruins- During the questline " A Dark Legacy"
- Von Everec Family Crypt- Behind a Breakable wall.
- Undvik- Within the rotten cave owned by Clan Tordarroch Forge
- Can be found also in a barrel in Castle Drahim south of Novigrad on floor 0 next to the tower (found in act 3/ level 30+)
Notes or Trivia about Superior Northern Wind