How to choose the golden hook wing?

Golden hook wings are taken from the tail fins of various sharks. The whole fin is boneless, with thin flesh film, thick wing needle and beautiful appearance. Most of them are scattered wings (raw wings) According to the types of shark's fin, the highest shark's fin is Tianjiu wing, followed by sea tiger, golden hook, spring wing and butterfly green. It's best to be dry: when choosing shark fin slices, it's best to be distorted in shape, uneven in plate, loud in knocking and dry in hand. \x0d\ It's better to use "Jinshantou": the wing head of shark fin has no edible value, is heavy and wastes money. When choosing shark fin, it is best to choose the kind with the wing head cut off (commonly known as Jinshan head). The shark fin without the wing head cut off is called "flat head", which is not cost-effective. \x0d\ It is best to have light skin without mildew: the wings of light skin are particularly yellow, and the salty wings feel thick and delicate, with strong smell and dark color. Shark fin will be moldy and have black spots if it is not well preserved. \x0d\ Length, width and thickness are preferred: the length of shark fin is in inches. The longer the shark fin of the same species, the better. Of course, the price will be relatively high.