On Sun, 16 May 2010 22:24:33 -0500, K wrote:

> That may be correct. Nuoc mam is made from fermented fish heads, smells to
> high heaven, but might be the most sensational flavor you'll ever taste.

It's made from whole fish. The spent fish meat is then sold as mam
nem (made into a dipping sauce of the same name). I have two
bottles of the ground fish in my fridge right now.

There would not be enough liquid in just fish heads to produce nuoc
mam.

-sw