Its been a while since I have posted this technique for membrane removal on BBRs. Since there are a lot of new people here, I thought I would re post it. Start by working your thumb and forefinger under the membrane at the middle of the rib.
Then slip your other thumb and forefinger and pull outward equally with both hands.
Continue out to the ends and you will find there will be no tearing and all the membrane will be removed. -RP