INGREDIENTS
•
apple cider vinegar
•
sugar
•
ground turmeric
•
mustard powder
•
mustard seeds
•
large zucchini, sliced into â??â?-thick rounds, preferably on a mandoline
•
large onion, thinly sliced
•
kosher salt
•
medium onion, chopped
•
medium carrot, peeled, chopped
•
celery stalk, chopped
•
sprig oregano
•
sprig rosemary
•
crushed red pepper flakes
•
low-sodium chicken broth
•
3-lb. skinless, boneless pork shoulder (Boston butt)
•
olive oil
•
Kosher salt, freshly ground pepper
•
mayonnaise
•
Dijon mustard
•
brioche buns, split
•
soppressata, thinly sliced
•
pepper Jack, thinly sliced