Is there a sustainable future for the veggie burger?

Whole grains, legumes, and vegetables enjoyed one year at the top of the burger heap. In 2015, “the best burger of the year,” as declared by GQ, was from New York City’s Superiority Burger, a tiny vegetarian joint run by former upscale pastry chef Brooks Headley. The recipe, per the restaurant’s 2018 cookbook, includes red quinoa, yellow onions, chickpeas,…