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 many small steps and even a side quest within a side quest. Let's break it down.
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 through the east gate). He seeks the secret to the monks' excellent wine, requiring several steps to uncover it. Exhaust all dialogue options with Casper to learn about Havel and the book he left with Adleta. This determines 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 get permission to talk to her. Remain kind to Adleta, explaining your need for the book for Casper. You can attempt a skill check to obtain it, or gift her the marigolds. Once you have the book, read it from your inventory.
Alternatively, skip Adleta and go directly to Havel at his inn in Kuttenberg City. 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, "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. Speak with the recruiter to begin the "Under the Straw Hat" side quest (optional, but allows free movement within the vineyard). Find Jerome on a bench near the main building.
Sneak into the main building, turn left, and locate the storeroom. Use your lockpicking skills to open chests and obtain Sulphur Wicks, necessary for Casper. For extra Groschen, collect five seedlings from the garden behind the main building before leaving.
To complete "Under the Straw Hat," perform tasks like removing plants and moving sacks, then report to Jerome. Otherwise, return to Casper with the wicks (and seedlings, if collected).
This completes "In Vino Veritas," allowing you to proceed with other quests in Kingdom Come: Deliverance 2, or perhaps pursue badge and dice collecting.
