Someone gave me a container of Quoc Viet brand pho broth base. The instructions are very vague. it seems that I am supposed to boil some brisket and throw away the water, then add the brisket back in the pot with more water, ginger, onion, and the pre-packed bouqet garni, plus the soup base. Has anyone used this stuff before? Should I use the whole container? any other tips?