I had almost given up on my hunt for authentic Asian cuisine in Prague.. but thank god for Yelp…read morebecause I found this place and my mind is blown. Probably the first place where I'm willing to pay the high cost because that's how good it is.
Hidden away on a side street about 5 min away from the Karlovo Namesti metro stop, this place is authentic Japanese. They have a great lunch menu as well as a number of seasonal menus and degustation dishes. I ordered the Miyabi -small, which contained grilled salmon, steamed pork in sauce, tempura, spinach with some sort of sauce and sesame, and pickled vegetables. Was not disappointed at all. The meal cost me 300 kc which is definitely expensive, but by American standards for Japanese food, the price isn't that appalling given how delicious and authentically prepared everything was.
Miyabi's menu is great because it doesn't just serve sushi--they have a lot of other more authentic Japanese home-cooking style dishes. All in all, just a fantastic find and I'll definitely be back to try some more items.
tldr; legit Japanese food in Prague at a higher price, but given the quality, so so worth it.