They have a short menu, but everything on it is great. The menu changes seasonally, but there are generally two vegetarian choices. As a vegan, I asked the waiter to hold the cheese out of my entree, and he extrapolated to the full meal, helping me find vegan options (but dessert was just tea). Entrees cost $18-$30 dollars a piece, but the excellent food, world class view, and superior wait staff/ambiance make it worth it for a rare splash.
Not really sure what is meant by a 'vegetarian dish'. If you you want just vegetables, they can accommodate your dietary preferences. My recommendation would be to cross over for just one meal and enjoy the local fish cuisine. The location is worth it even I'd you just have tomato soup and salad. It is rivaled by few places in the US.
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