Some side quests are more enjoyable than others, but some can be quite confusing or frustrating. Completing "In Vino Veritas" in Kingdom Come: Deliverance 2 involves several steps and even a side quest within a side quest.
Contents
- Speak with Casper and Havel
- Find the Monastery’s Secret Ingredient
Speak with Casper and Havel

Begin "In Vino Veritas" by speaking with Casper Rudolf, located at his drink cart on the east side of Kuttenberg City (easily found by proceeding straight from the east gate). He seeks to discover the secret to the monks' exceptional wine. Exhaust all dialogue options to learn about Havel and the book he left with Adleta. This sets the stage for your approach to impressing Havel.
To obtain the book from Adleta, visit the southeast corner of Kuttenberg's inner wall during the morning or afternoon. You'll find her in an open garden. Gather five marigolds beforehand. Either find her before her brother, Hugo, arrives, or speak with Hugo to gain permission to talk to her. Maintain a kind demeanor while explaining your need for the book to Casper. You can attempt a skill check to obtain it directly, or gift her the marigolds. Once acquired, read the book from your inventory. Note: Obtaining the book from Adleta is optional.
Alternatively, proceed directly to Havel at his inn in Kuttenberg City. Enhance your drinking skills and wear an outfit boosting your Charisma to at least 18. Engage Havel in conversation, selecting the following dialogue options: Germany, "Let's do it," "That's a very fine gift," Steinberger, and finally, "It's missing ginger." This impresses Havel, revealing the monastery's secret ingredient. Return this information to Casper.
Find the Monastery’s Secret Ingredient

Travel to the vineyard north of Kuttenberg. Initiate the "Under the Straw Hat" side quest by speaking with the recruiter. While not mandatory for "In Vino Veritas," starting this quest allows free movement within the vineyard. Locate Jerome on a bench near the main building.

Enter the main building, turn left, and access the storeroom. Use your lockpicking skills to open chests and acquire the Sulphur Wicks needed for Casper. For extra Groschen, gather five seedlings from the garden behind the main building before leaving.
Completing "Under the Straw Hat" involves various tasks like removing plants and moving sacks. Report to Jerome upon completion for additional Groschen. Regardless, return to Casper with the Sulphur Wicks (and seedlings, if collected).
This concludes "In Vino Veritas," allowing you to progress to other quests in Kingdom Come: Deliverance 2, or perhaps pursue badge and dice collecting.