Interesting development at Costco. Right next to these "Chuck short ribs" were similar-appearing but obviously different pkgs marked, simply, "flap." I'll have to try it next time.
But this time we had a steak-off between my short ribs, and Costco's tri-tip, which my buddy Rusty thought he preferred. After cooking both, and tasting both together, he swapped out his preference!

So, in adjacent bins at Costco on Sunday were to be found chuck short ribs, flap, tri-tip, skirt (didn't check outer vs. inner) and flank. Nice group of choices!
Geo
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