We went for lunch on one of their vegetarian-food-only Saturdays (last Saturday in the month). We had the mango salad, the gado (crispy tofu with peanut-flavour sauce), the 'limette ente' and a vege sushi-maki plate for 1 person.
The sushi was amazing. 9 varieties including maki, nigiri, and inari, filled/topped with cucumber, mushroom, avocado, mango, carrot, tofu, and saitan-caviar, all freshly made and delicious.
The limette ente (vegetarian duck with lime sauce) was delicious with a thoughtful blend of flavours. (The 'lime' was actually lemon but it was still great). The vege duck seemed to be something other than the canned stuff that other places serve.
The salad was delicios, fresh and spicy (as we requested). They also gave us a '5-element soup' as a gratis entree and gebackene bananas as a gratis dessert.
Overall it was a thoughtfully prepared and excellent lunch. We'll be going back again: their vegetarian options are also available on the regular menu.
Cons: Favoritenstrasse traffic