Originally Posted by roadfix
Regardless of who the distributor is are your Costco rib membranes been removed?
Originally Posted by Andy M.
Last time I bought ribs at Costco, I got St. Louis and I had to remove the membrane.
No, the membranes were present on both the baby backs and the St. Louis.
I quit pulling it off anyway, unless it very thick and apparent.
I can't tell the difference with it or without it.
Update: I made ribs inside again and adjusted the cooking time to two hours at 250°F instead of three.
Next time it will be 2.5 hours at 250°F, then broil until nicely browned up.
They were very good, but need the extra 1/2 hour it seems.
There were no leftovers, so I assume the kids and grand kids enjoyed them.