Title says it all, I'm looking for vegan alternatives to pecorino romano for when I want to make pesto for vegan guests. Not striving for authenticity, and yes pesto is serviceable without the cheese, but it's missing a little something something. If it was just parmesan I could get by with liquid aminos or something, but it seems much harder to emulate sheep's milk cheese. And no, vegan cheeses don't work!
The most important part for me is the taste, as I get most of my texture from how I process the nuts and basil.