Torn-out page: Grave hag decoction

Torn-out page: Grave hag decoction is an alchemy formula in that is needed to craft grave hag decoction.
It's a possible spawn at a random diagram location or purchased from the following merchants:
* All herbalists at liberated abandoned sites in White Orchard and Velen
* Herbalist outside the Cunny of the Goose inn
* Jonna in Rannvaig
* Yolar at Gedyneith
* Herbalist in Barrengarth 
* All herbalists in Toussaint 
It can also be obtained by reading Of Water and Fog, but the book doesn't appear during gameplay.
ru:Вырванная страница: Отвар из кладбищенской бабы
Category:The Witcher 3 alchemy formulae