4 turkey thighs, skin on, bone-in
Salt
4 Tbsp vegetable oil
1 large yellow or white onion, roughly chopped
1-2 large parsnips, peeled, cut into 1-inch pieces
2-3 large carrots, peeled, cut into 1-inch pieces
3 cups chicken or turkey stock
2 Tbsp brown sugar
1/3 cup yellow mustard
1 heaping Tbsp dry mustard powder
2 teaspoons chipotle or chili powder
4-6 Yukon Gold or other yellow potatoes, peeled, cut into 1-inch pieces
1 cup (packed) roughly chopped mustard greens, arugula, spinach, or parsley
1/4 cup whole grain mustard