In San Francisco, United States, Shizen is best approached as a vegan restaurant: specific enough to guide expectations before you book. The draw is the kitchen's clarity, hospitality and consistency; at a comparatively accessible price point, it should be judged as a smart choice when you want something considered without turning the night into a major splurge. Michelin selection gives it a credible place in the dining conversation, even without the expectation or formality of a starred meal.