Apple Cider is Apple Juice fermented in a Fermentation Barrel, one bottle for one, with the Cider Brewery technology (30 green) and Farming mastery 5. Drinking it lowers insanity by 7.
The Tavern sells it from tier I (20, 30, then 50 in stock) and the Brewery too (10 to 20). The Tavern’s own tier II upgrade takes 20. At the Distillation Cube a bottle with 2 Clay Urns and 20 Fuel gives one Alcohol.