This is so simple I almost hesitate to write about it. A fish only has two collars, and if more people started broiling them at home it could drive up the price of this unlovely but delicious and economical cut. Hamachi, yellowtail, or Japanese amberjack, has a particularly meaty collar that should never be discarded. Occasionally they’re offered grilled at Arami or Yusho (where it’s only trumped by Fish Face), but they’re always available at Mitsuwa, where they’re currently priced at $10.99 a pound.