Kingdom Come: Brew Fever Tonic Revealed!

In "Kingdom Come: Deliverance 2," Hans's main quest, "For Whom the Bell Tolls," requires crafting a Fever Tonic to help someone at Trosky Castle. Here's how to obtain the recipe and brew the tonic:

Acquiring the Fever Tonic Recipe:

There are two ways to access the Surgeon's Workshop in Trosky Castle, where the recipe resides:

1. Stealth: Sneak into the workshop.

2. Diplomacy: Complete the "For Whom the Bell Tolls" quest up to delivering the horseshoe. Then, speak to Cook Fanka at the forge and offer to help with her locked chest. This leads you to the noble's kitchen, where you'll find the chamberlain. Convince him you can help his stomach ailment by passing skill checks. Success grants access to the workshop. Alternatively, if your skill checks fail, steal some food, go to the other courtyard side, and use the stairs to a door on your right. Bribe the guard with the stolen food. Then sneak upstairs to the workshop.

Once inside the workshop, locate the Physician's Journal on the bookshelf.

Brewing the Fever Tonic:

The necessary herbs are already on the surgeon's station. Open the journal to the Fever Tonicum recipe. Follow these steps:

1. Pour wine into the cauldron.
2. Add 3 handfuls of Feverfew.
3. Lower the heat and boil for 2 turns of the sandglass.
4. Grind a handful of Elderberry Leaves.
5. Add the ground Elderberry Leaves.
6. Add 2 handfuls of Ginger.
7. Take a phial from the bottom-left shelf.
8. Distill the tonic using the Still.

Don't worry about failures; there are plenty of herbs available.

Completing the Quest:

After brewing the Fever Tonic, if you gained the chamberlain's trust, return with both the Fever Tonic and a Digestive Potion. Otherwise, use the noble's kitchen to sneak to the chapel and find Thomas and Adele. Speak with Adele to conclude the quest.