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Some interesting links to the topic:
- All fish, including seawater fish, may contain parasites. Although the risk is small, people at greater risk, including older people, small children and pregnant women, should be careful when eating raw fish. To kill the parasites, the fish needs to be frozen and then stored at -4 degrees F (-20 degrees C) for at least 24 hours. Your sushi fish should have been frozen this way, but if you are nervous, ask your sushi bar.
- Freshwater fish is riskier than saltwater fish, and salmon is thought to be particularly risky: It can be infected with tapeworms in addition to freshwater trematode parasites. Raw salmon is sometimes brined and vinegared when served raw, but this does not adequately kill any parasites.
energetically I think something is lost in cooking. The way I feel after Sushi and after cooked fish is worlds apart.
Don't count on the pickling, curing processes, or home refrigerators (most of which cannot attain the cold temperature required) to kill the larvae.
As posted above and recommended in the linked documents, -20°C during at least 24 hours (some sources recommend up to 72h) are sufficient. Freezing compatments of home refrigerators are often indeed insufficient, but regular freezers should be fine.To make sushi/sashimi safe to eat you just need to freeze it below -30 degrees C. Most freezers don't do this though.
As posted above and recommended in the linked documents, -20°C during at least 24 hours (some sources recommend up to 72h) are sufficient. Freezing compatments of home refrigerators are often indeed insufficient, but regular freezers should be fine.
Check them above. There are several of them mentioned in the posted links. The last one comes from the Spanish Food Security Agency and is quite recent (mid december 2006). May be different in Canada, but hey, you just need to let the fish outside for a moment, you do not need any freezers there!What health regulations is that from?