Emping is a type of Indonesian chip, a bite-size snack kripik cracker, made of melinjo or belinjo (Gnetum gnemon) nuts (which are seeds).
[1] Emping snacks are available in markets either plain (original), salty, spicy, or sweet, depending on whether salt or caramelized sugar is added.
Each of the gnetum seeds is whacked with a wooden hammer-like instrument or pressed with a stone cylinder to create flat and round emping, and later arranged in a tray made of weaved bamboo and sun-dried for a whole day.
Raw emping, as bought from traditional markets, are better when sun-dried first to reduce their humidity, then later fried with ample hot vegetable oil until they expand, becoming crispy and turning golden yellow.
In the Netherlands, due to historic ties with Indonesia, packaged dried (raw) emping is also available for home frying.