Before he was “the most powerful activist in America,” Ady Barkan was, above all else, a loyal reader of this blog. OK, he did some other stuff too. But he did read this blog, and comment on the recipes, and even, once, send me a recipe – for pistachio pesto, which I made and thought was delicious, but never blogged about. I don’t know why. It was 2012. Maybe I was too busy humming Call Me Maybe. Anyway, I was thinking about that pesto, and Ady, the other day, for no particular reason...