Vegan, Gluten-Free, Lactose-Free, and Vegetarian are on the menu, but the same kitchen also prepares what you avoid, so cross-contamination is possible. Tell staff what you react to, and ask how your dish is prepared before you order.
A certified-organic castle restaurant above Lake Constance, open to the public, cooking from its own Demeter garden with a vegan menu always on offer and gluten- and lactose-free dishes on request. Weekly lunch menus at noon, tasting dishes in the evening.