In the insert of an Instant Pot or pressure cooker, combine the pork, onion, hominy and its juices, water, garlic, chipotle chiles, adobo sauce, ancho chile powder, cumin, oregano, and salt.☞ TESTER TIP: If you like your hominy more al dente, add half the can while cooking so it flavors and thickens the stew a bit, and save the other half to add after cooking.