Sugarcane is a tremendous multicultural triumph, an effortlessly cool spot that has energized Midtown Miami with a mix of Asian, European and Latin flavors. It’s like an inverted version of Nobu or Katsuya. Sugarcane is South Florida to its core, with its festive vibe, potent rum drinks, tropical trees and Gloria Estefan showing up for a late-night dinner. But it’s also a destination for good sushi and a scorching robata grill that reminds you the Japanese were way ahead of the current open-fire cooking trend. How many sushi-and-robata joints, though, have a duck and waffle dish with mustard maple syrup that’s so revelatory it led to a spin-off restaurant in London?