Torn-out page: Katakan decoction is an alchemy formula in The Witcher 3: Wild Hunt that is needed to craft katakan decoction.
It can be obtained by reading Katakans: A Monograph, found at random diagram locations, or purchased from the following merchants:
- Herbalist in Hierarch Square
- Gremist at Gedyneith
- Yolar at Gedyneith
- Herbalist in Heddel
- All alchemists and herbalists in Toussaint except Pinastri
