Krupuk kulit / Rambak is a traditional Indonesian cattle skin krupuk. Traditionally it is made from the soft inner skin of cattle, diced, and sun-dried until it hardens and loses most of its water content. The diced and dried skin are later fried in ample hot cooking oil until they expand in similar fashion with bubble and yield a crispy texture. This fried cattle skin is then sealed in vacuum plastic bags to ensure and prolong its crispiness.
