Hippie mushroom salad (v)

The dressing for this salad is based on Lil Deb’s Oasis’ “hippie dressing,” which is basically a ton of nutritional yeast and mustard. Nutritional yeast was like a whole era of vegetarian dining — you’d go to a restaurant where all the entrees were different vegetables or tofu or tempeh served over grains, and there’d be a shaker of nutritional yeast ne…