I usually go for dinner, but they have breakfast and lunch too. Also recommended to go for coffee and cake. All vegetarian and all organic. Ingredients are listed for all dishes and lots of symbols to indicate allergens and vegan. If it's full downstairs, you can go up and on warmer days, you can sit outside.
Self-service buffet-style at 3 euros/ 100g of food. I loved the quality and variety of different organic and vegan options. Located next to an organic supermarket, while the upper floor had additional space for more clients. The art work exposed was delightful. Highly recommended.