
Fish sauce: It is more than an ingredient -- it is the very soul of Vietnamese cooking. Click through to learn more.

Phung Hung: On Phú Quốc island, this factory makes some of Vietnam's finest fish sauce.

Location: Phú Quốc is off the coast of southern Vietnam, a 45-minute flight from Ho Chi Minh City.

Key ingredients: The crucial ingredients in fish sauce are cá cơm (black anchovies) and smaller white anchovies. Together, they comprise about 95% of the fish used.

Barrel aged: The sauce spends a year in barrels made of boi loi wood.

Fishing for compliments: The hefty barrels which hold tons of fish are made from 54 slats of wood, bound together by hand with a rattan twine. It takes two men three weeks to make one.

365 days: Every day for a whole year, the liquid that seeps from the fish is drained and then returned into the vat.

Cream of the crop: The most coveted sauce comes from the first pressing. It is sometimes called "extra virgin," like olive oil.

Flavor profile: The sauce's intensity is measured by the amount of nitrogen present.

Going home: Some airlines have rules against fish sauce in case of spillage, so Phung Hung's staff is well versed in how to pack bottles extra tight.



