Pressure Cooker Corned Beef and Cabbage

to 3 1/2-pound ready-to-cook corned beef, preferably flat-cut

semi-dry white wine, such as Riesling

red or Yukon gold potatoes, cut into 1- to 2-inch pieces

to 3 large carrots (about 1/2 pound), peeled and cut into 1- to 2-inch pieces

small head green or savoy cabbage (about 1 pound), core left intact, cut into 4 wedges

Dijon mustard, plus more for serving

honey

Flaky sea salt, if necessary

Black pepper