A 10-ounce patty made from dry-aged prime rib, short rib, flank, and skirt, topped with “smothered” onions and cheddar. A price tag of $22 for a burger? Yeah, it’s crazy. Just think of it as a steak. 867 Boylston St., Boston. 617-247-3200. www.backbaysocialclub.com .
Yoon S. Byun/Globe Staff
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