I first learned of Flap steak or bavette here after having a steak at Persephone (thx Almansa).
On a recent trip to Mittaheap in Lynn I bought about 3 lbs at a local Asian shop..and threw it in the freezer. Cooked last night on a bbq and it was fantastic with a little olive oil/vinegar marinade...quick char with high heat and then moved to a lower heat. Little chew but great flavor. This was graded "select" the grade below choice but was a beautiful piece of meat.
I've never seen this cut at my usual butcher shops..Sulmona and Savenor's. Anyone know of anyplace that sells it? T or bike friendly from downtown.