Into another small bowl, squeeze grapefruit membrane to release juice. Set aside. Peel jicama and cut into thin matchsticks about 2 inches long. Slice fennel bulb into very thin strips.

Expect fun flavors like malted chocolate with jicama and popcorn. Zoom out: Kayu is among a new wave of hot openings along H Street, including tiny new bar Providencia and Indian street food ...