You definitely do not need to put seaweed in it.
I looked it up online, and it says to bring 2.5 cups of water to a boil and then add 1 cup of amaranth and simmer for about 20 minutes. For porrige, use 3 cups of water (which is what I remember from cooking it, but I haven't made it in a while) and simmer for about 25 minutes.
Allison

: Hi Allison:

: Could you tell me how to cook
: amaranth, what it tastes like and
: what else you put with it?
: I bought some the other day and don't
: know how to cook it. I went
: on Utube to learn how to make it
: but she put some strange kind of
: ground up seaweed in it and I
: don't know if that is essential or
: not.

: Dori