In *Kingdom Come: Deliverance 2*'s main quest, "For Whom the Bell Tolls," Hans needs your help at Trosky Castle. A crucial step involves creating a Fever Tonic using alchemy. Here's how:
Kingdom Come: Deliverance 2 Fever Tonic Recipe & Location
The Fever Tonic recipe resides within the Surgeon's Workshop in Trosky Castle. Access is gained in two ways: stealthily sneaking in, or persuading the Chamberlain. To persuade him, complete "For Whom the Bell Tolls" objectives up to delivering the horseshoe. Return to the forge, speak with Cook Fanka, and offer to help with her locked chest. This leads you to the noble's kitchen and the ailing Chamberlain. Successfully passing skill checks while discussing his health will grant you workshop access. Crafting a Digestive Potion alongside the Fever Tonic further solidifies your access and allows you to meet Thomas.
If persuasion fails, steal some food, exit the kitchen, and use the courtyard stairs to reach another kitchen. Bribe the guard with the stolen food. Then, sneak upstairs to the Surgeon's Workshop, locate the journal on the bookshelf, and read it. The brewing station is ready for use.
How to Brew Fever Tonic
The necessary herbs are already at the surgeon's station. Follow these steps, referencing the Fever Tonicum recipe in the journal:
- Pour wine into the cauldron.
- Add 3 handfuls of Feverfew.
- Lower the cauldron and boil for 2 turns of the sandglass.
- Grind a handful of Elderberry Leaves with the mortar and pestle.
- Add the ground Elderberry Leaves.
- Add 2 handfuls of Ginger.
- Grab a phial from the bottom left shelf.
- Distill the tonic using the Still.
Don't worry about failures; ample herbs are available.
After brewing the Fever Tonic, locate Thomas. If you gained the Chamberlain's trust, return with both the Fever Tonic and Digestive Potion. Otherwise, use the noble's kitchen to sneak to the chapel and find Thomas and his sister, Adele. Speak with Adele to complete the quest.
