[Sca-cooks] green leafy things

[Pixel, Goddess and Queen]

So when I was at the grocery store this weekend, I bought a green leafy
thing because it looked interesting. It's not lettuce. It looks vaguely
like the rich upscale classy version of kale--lighter green, very curly
ruffled leaves, leatherier than lettuce but not quite as heavy as kale. It
wasn't labelled. It tastes slightly bitter and green.

Anyone have a clue as to what it is?

Margaret