Move over, oranges: Kumquats are popping up in salads and sauces, and in drinks ranging from cocktails to beers. The tiny, tart citrus fruit packs a pucker punch that is gaining popularity on restaurant menus and with consumers.

Correction: March 13, 2018  This gallery has been updated to include the locations of RockSugar Southeast Asian Kitchen's restaurants in Los Angeles and Oak Brook, Ill.