What is a good substitute or where do you find baby Kale ?
Baby kale is just very young kale. You may find it in your grocer's produce section. You could substitute spinach or swiss chard if you cannot find young kale.
I do a soup with chicken stock, parm (actually, parm whisked with egg, used to form stracciatella, sort of Italian egg drops) and escarole, cut into strips - I'd think you could sub that for the kale here too.
Escarole definitely goes well with chicken stock and parmigiano.
I wanted to let you all know, I used dandelion greens, and it was great! Thank you for your suggestions!