What is "proben"

Proben (sometimes also "chicken proben", or spelled "Proven") is a type of street food popular in some regions of the Philippines. It consists essentially of the proventriculus of a chicken, dipped in cornstarch, and deep-fried. It is served either in a small bagful of vinegar, or skewered on bamboo sticks to be dipped in the vinegar just before it is eaten.

Proven is particularly favored among towns in Laguna, and by students of the University of the Philippines Los Baños, where enjoying a taste of the snack in the afternoon has become a popular part of campus culture, similar to the iconic status given to Isaw at the University of the Philippines Diliman. It is also particularly favored on the streets of Cagayan de Oro and Iligan City.