In a bowl, mix paprika, cumin, brown sugar, garlic powder, onion salt, salt and pepper for your rub.
Remove any excess pieces of meat from the edges of your ribs and then remove the membrane from the back with a paper towel.
Sprinkle your rub over the ribs, pat & rub it in, make sure they're covered well.
Cut the racks in half, so they fit your Instant Pot.
Place trivet in bottom of Instant Pot and add your cooking liquids (Lager & apple cider vinegar)
Pressure cook on high pressure, 25-30 mins, natural release
While cooking, preheat your oven to 200C and mix ingredients for BBQ sauce (Just a quick recipe, you can replace with BBQ sauce of your choice if preferred)
Once pressure has dropped, carefully open the lid and move ribs to a baking tray, brush with as much BBQ sauce as you want, all sides, even bones
Oven bake 10-15 mins or until the BBQ sauce is sticky and to your liking
Remove from the oven and serve