Do ribs get tender in the Instant Pot?
Yes. Pressure cooking melts collagen fast, which is why ribs turn tender even without hours in the oven. They will be very soft coming out of the pot, so handle gently and finish on a pan.
How long do I cook ribs in the Instant Pot?
For a 2 to 2 1/2 lb rack:
Baby back ribs: High Pressure for 23 to 25 minutes
St. Louis style or spare ribs: High Pressure for 28 to 32 minutes
Then use a 10 minute natural release before venting. If your rack is extra meaty or thick, go to the higher end, or add 2 minutes next time.
Why do my ribs fall apart?
That usually means they cooked a little too long, or you did a full natural release and they kept softening in the heat. Next time, drop the cook time by 2 to 4 minutes and stick with a 10 minute natural release, not a full one.
Do I need a trivet?
Yes. You want the ribs steaming above the liquid, not boiling in it. If you do not have the trivet, you can ball up a few thick rings of foil to lift the rack.
Can I skip the broiler?
You can, but you will miss the sticky, caramelized top layer. If your broiler is occupied, you can bake at 450°F for 8 to 12 minutes, or use an air fryer at 400°F for 5 to 7 minutes in batches.
What sauce is best?
Use what your family likes. For sweet heat, go with a honey barbecue. For tang, pick a vinegar-forward sauce. If your sauce is very sweet, add a small squeeze of lemon or a splash of vinegar to keep it bright.
How do I know when ribs are done?
Ribs are more about tenderness than a single temperature. Pork is safe at 145°F, but ribs are usually taken higher so they turn tender and pull cleanly from the bone. If they still feel tough after broiling, put them back in for 2 to 3 more minutes on High Pressure next time.