Seven Swans is a vegan restaurant that gives Frankfurt on the Main, Germany a clear reason to appear on a dining shortlist. The draw is the kitchen's clarity, hospitality and consistency; at a luxury, special-occasion price point, it should be judged as a deliberate destination meal. Its one-star standing makes it a serious address: polished enough to plan around, but still best judged by whether the kitchen's point of view matches your tastes.