Another plant ID- pigweed/amaranth family

You all are plant geniuses. Can you help me with another mystery? This one is growing in a little strip of no man's land between a sidewalk and the porch where weeds battle it out with water deprived flowers. I have a bunch of different kinds of mints, along with thyme, lavender, and rosemary growing in the bed on the other side of the sidewalk, so at first I thought this was some kind of self seeded mint. My spearmint readily seeds itself all over the place.

This has the flower stalk that's a little like a mint but the leaves have a very green, fresh smell- not minty or herbal, but more like lettuce. It smells pretty delicious actually but I'm not going to taste it until I ID it.

The stem is green with a light red line going up it. The stems and leaves have fine hairs. It's about 3' tall.

no thorns, i take it? it looks like one of the amaranths (not spinosus)… i’ll let someone else narrow it down further.

Looks like pigweed (Amaranthus retroflexus) but does not appear perhaps to be the red root ecotype?  Does anyone else in the PNW know of an ecotype with a yellowish seed frond?  

PS:  Friends from Nepal use it sauteed with garlic and cumin.  Leaves of young plants work good in saag recipes.

Ok, yes, I can see it being a member of the amaranth/pigweed family. No, it doesn't have spines.

Are all amaranths edible?

yes but more palatable when younger.