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 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, located at his drink cart on the east side of Kuttenberg City. He's easily found by proceeding straight through the east gate. Casper seeks the secret to the monks' superior wine. Exhaust all dialogue options to learn about Havel and the book he left with Adleta. This sets the stage for your interaction with 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 get 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 the marigolds as a gift. Once acquired, read the book from your inventory.
Alternatively, bypass Adleta entirely and proceed directly to Havel at his inn in Kuttenberg. Improve your drinking skill and wear an outfit boosting your Charisma to at least 18. In your conversation with Havel, select the following options: Germany, "Let's do it," "That's a very fine gift," Steinberger, and "It's missing ginger." This impresses Havel, revealing the monastery's secret ingredient. Report this information back 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 obtain the Sulphur Wicks needed for Casper. For additional Groschen, collect five seedlings from the garden behind the main building before leaving.
To complete "Under the Straw Hat," perform tasks such as clearing plants and moving sacks. Report to Jerome upon completion for your reward. Regardless, return to Casper to deliver the wicks (and seedlings, if collected).
This concludes "In Vino Veritas," allowing you to proceed with other quests in Kingdom Come: Deliverance 2 or pursue activities like collecting badges and dice.