Go in Oflovack and find Iophyrus Phynix. He will give you the mission.
You'll get 
to make a campfire (to use with mats).
OOC
The advantage of the campfire rite:
- see the reboots (they disappear)
- accelerates regeneration
Note and links
The French page has spoilers.
- Source (in French): Mermedia at https://eclaireur-atys.forumsactifs.com/t491p60-les-insolites-de-ryry