Thread: Edible insects
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Old 08-05-2011, 10:27 AM   #12
havalotta
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Quote:
The parasites present in fish are in their gut. The life cycle of these worms is that once an animal dies the parasites sense this and move out of the gut, through the intenstinal walls and into the flesh in preparation to be eaten.
Does sushi have parasites? - General Chowhounding Topics - Chowhound

And the facts about freezing...
Can I freeze supermarket fish to make it safe?
Quote:
Most fish served in restaurants are 'flash frozen' in seconds within hours of being harvested, with the added benefit of killing any parasites.
Unfortunately, your home freezer is not able to freeze a piece of fish as quickly as 'flash freezing' and therefore may not kill all parasites.
Home freezing does not deal with other pathogens (e.g. bacteria on your counter) and can effect the texture and flavor.
It is not an accepted practice to freeze fish from the regular supermarket at home to make it safe for consumption while raw.
The Sushi FAQ - Making sushi at home and other advanced sushi questions
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