Are fresh Amaranth or Quinoa tops & seeds okay to eat? Are fresh or green seeds ok? Recipes?

Do seeds we eat dried need to be fully mature & dried to be edible?

I grow a lot of quinoa and amaranth in the arid mediterranean climate of the central valley foothills of California (1,900' elevation). I just don't know at what stage the seeds are edible (or if edible during all stages), what the nutrient profile changes are, and if fresh seeds are more healthy. I just look at the full frond of amaranth & see more food than the small dried 1/2-1 cup of seeds I get out of them. (I do eat the leaves on both quinoa & amaranth).

Anyway, just wondering if anyone knows.

Thanks!

MP