Rokai takes Japanese food to a new level in Mexico City in the emerging 'Little Toyko' area. Opt for the 'omakase,' a changing tasting menu consisting of meticulously prepared dishes, including fresh sushi and sashimi. Each course (there are up to nine) leaves you wanting more. Reserve ahead.
The same owners run ramen restaurant Rokai Ramen-Ya next door if you're looking for something cheaper (ramen M$185).