How to Make Fever Tonic in Kingdom Come Deliverance 2

In "For Whom the Bell Tolls," a main quest in Kingdom Come: Deliverance 2, Hans requires your assistance at Trosky Castle. This involves brewing a Fever Tonic using alchemy.

Locating the Fever Tonic Recipe:

The recipe resides within the Surgeon's Workshop in Trosky Castle. Access is gained either by stealth or persuasion. To persuade the Chamberlain, complete the "For Whom the Bell Tolls" objectives up to delivering the horseshoe. Then, speak with Cook Fanka at the forge, offering assistance with her locked chest. This leads you to the noble's kitchen and the ailing Chamberlain. Successfully completing skill checks during conversation grants workshop access. Crafting a Digestive Potion alongside the Fever Tonic further enhances your chances.

Alternatively, if persuasion fails, steal food, exit the kitchen, and use a different set of stairs leading to another kitchen. Bribe the guard with the stolen food. Then, sneak upstairs to the Surgeon's Workshop.

Brewing the Fever Tonic:

The necessary herbs are already present at the surgeon's station. Consult the Fever Tonicum recipe in the journal. 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. Obtain a phial from the bottom-left shelf.
8. Distill the tonic using the Still.

Additional herbs are available in the chest if needed.

Completing the Quest:

After brewing the Fever Tonic, locate Thomas. If you gained the Chamberlain's trust, return with both potions. Otherwise, use the noble's kitchen to reach the chapel and find Thomas and Adele. Speak with Adele to conclude the quest.