Some side quests are more enjoyable than others, while some prove more confusing or frustrating. Completing "In Vino Veritas" in *Kingdom Come: Deliverance 2* involves numerous small steps and even a side quest within a side quest.
Table of 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 at his drink cart on the east side of Kuttenberg City (easily found by proceeding straight from the east gate). He seeks to uncover the secret behind the monks' exceptional wine. Exhaust all dialogue options to learn about Havel and the book he entrusted to Adleta. This sets the stage for your approach to impressing Havel.
To obtain the book from Adleta, visit her garden in the southeast corner of Kuttenberg's inner walls during the morning or afternoon. 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 when requesting the book for Casper. You can attempt a skill check to obtain it directly, or offer her the marigolds as a gift. Once acquired, read the book from your inventory. Note: obtaining the book 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. During your conversation with Havel, select the following options: Germany, "Let's do it," "That's a very fine gift," Steinberger, "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 to the recruiter (completing this quest is optional, but starting it allows free movement within the vineyard). Locate Jerome on a bench near the main building.

Enter the main building, proceed to the storeroom (left of the entrance), and use your lockpicking skills to open the chests. Inside, you'll find the Sulphur Wicks needed for Casper. For extra Groschen, collect five seedlings from the garden behind the main building before departing.
To complete "Under the Straw Hat," perform tasks like removing plants and moving sacks. Report to Jerome upon completion for your reward. Regardless of whether you complete "Under the Straw Hat," 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 other activities like collecting badges and dice.