Flanken rib protip: Never buy them in the package from the meat department. Always ask for fresh cut. Specifying a thickness will give you a good reason since they're usually cut very thin. When they're packaging them they stuff shitty ribs with hardly any meat hidden behind nice wide cuts. When you ask for a fresh cut the butcher is going to be much more inclined to give you nice, big, uniform sections of beef so you don't complain.