What kills worms in Salmon?

Chef's answer
Most commercial sushi-grade seafood suppliers freeze at -40 C.
Frequently asked Questions 🎓
Put a plug into the clam to keep it open. Like the grafting process, extracting the pearl without killing the oyster requires putting in a plug to hold the shell apart. Cut the oyster and use tweezers to remove the pearl. Remove the plug and allow the oyster time to recover before grafting with the oyster again.
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