Preheat the oven to 250°F to 300°F
Wrap the ribs in foil
Add a small splash of broth, water, or barbecue sauce before sealing
Place the wrapped ribs on a baking sheet
Heat for 20 to 30 minutes, or until warmed through
Unwrap the ribs for the last 5 to 10 minutes if you want the outside less soft
Use a grill over low heat if you prefer a smoky finish
Heat on the grill for 10 to 15 minutes, turning occasionally
Use a microwave only for small portions
Cover the ribs and heat in short intervals if using a microwave
Check that the ribs reach 165°F internally before serving