3 buffalo burgers cabernet Recipes

olive oil, divided, sliced onions (about 2), cabernet sauvignon or other dry red wine, ground bison (buffalo), chopped shallots, coarse kosher salt, dried thyme, organic hamburger buns, sliced wisconsin white cheddar cheese, dijon mustard, head of escarole, leaves separated

olive oil, divided, sliced onions (about 2), dry red wine (such as cabernet sauvignon), ground buffalo meat (bison), chopped shallots, coarse kosher salt, dried thyme, hamburger buns, sliced wisconsin white cheddar cheese, dijon mustard (to taste), head escarole, leaves separated