Make sure insert is in Instant Pot. Set Instant Pot to saute. Let it heat up until it says “HOT”.
Add ribs, in batches if necessary, to brown on all sides.
Move the cooked ribs to a plate to make room in the pot for the uncooked ribs.
After all the ribs are cooked and removed to a plate, pour a couple of splashes of sherry in the pot to deglaze.
Pour 1 cup of water into insert. Stir, then add the ribs. Pour BBQ sauce on top.
Put lid in place, set valve to “sealing”, then set to pressure cook on high for 30 minutes.
When the time is up, allow to naturally release pressure for 10 minutes. Then manually release the remaining pressure. Serve with additional sauce, if desired.