Cookaholics Bulletin Board
http://cookaholics.org/

They've always said that salmon sushi was unsafe ...
http://cookaholics.org/viewtopic.php?f=20&t=4443
Page 1 of 1

Author:  TheFuzzy [ Fri Jan 13, 2017 9:40 pm ]
Post subject:  They've always said that salmon sushi was unsafe ...

... now they have proof:

http://www.cnn.com/2017/01/11/health/sa ... index.html

Author:  TheFuzzy [ Fri Jan 13, 2017 9:43 pm ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

This also means I'm gonna stick to making gravlax from frozen salmon, I think.

Author:  pepperhead212 [ Sat Jan 14, 2017 7:34 am ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

Simply freezing may not destroy this. I remember reading something about freezing fish to - 40F, to destroy all of the parasites.

I'll stick with cooking.

Author:  Paul Kierstead [ Sat Jan 14, 2017 11:07 am ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

The rules in Ontario are (or were .. the status seems uncertain right now)

Quote:
...shall be frozen before preparation and serving to a temperature of -20 C or below for seven days, or to a temperature of -35 C for 15 hours


I'd be curious if the gravlax curing also kills the worms.

Author:  pepperhead212 [ Sat Jan 14, 2017 2:25 pm ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

Paul Kierstead wrote:
I'd be curious if the gravlax curing also kills the worms.

I'd be suspicious of the salt killing them, given their eventual home in digestive juices. Also, the eggs of some parasitic worms have survived long stints in formaldehyde.

Still want to eat sushi?

Author:  Paul Kierstead [ Sat Jan 14, 2017 3:02 pm ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

Sure, love the stuff! The risk when well prepared seems slight. OTOH, when I go to a mexican resort, I don't eat the sushi.

Author:  TheFuzzy [ Sat Jan 14, 2017 3:39 pm ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

Dave,

Salt != acidity. From what I've searched out, the regimen of freeze, thaw, cure in salt seems to be adequate to destroy tapeworms and roundworms. However, acid cures (ceviche) do little to kill parasites. both because they're shorter and (as you point out) are less potent than stomach acid.

Author:  pepperhead212 [ Sun Jan 15, 2017 12:47 am ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

Another reference to sushi (though back in the 70s they were not using this term much yet) that I recall from that parasitology class was about a common protozoan parasite that visitors to Japan would often contract. It would cause nausea and diarrhea, but nothing life threatening - sort of like eating at a bad restaurant. Yet a large majority of the locals, when checked for the parasite, had it in their blood, but showed no symptoms! The theory was, that since they were exposed to these things from early on, they became immune to them.

Author:  pepperhead212 [ Sun Jan 15, 2017 8:58 am ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

I just saw a newscast that mentioned the tapeworm in wild salmon. They also said that "adequately" cooking or freezing the fish will destroy the worm, but didn't say what adequate would be.

Author:  TheFuzzy [ Sun Jan 15, 2017 1:31 pm ]
Post subject:  Re: They've always said that salmon sushi was unsafe ...

Dave,

Apparently some Japanese staple foods, like shiso leaf, act as mild anti-parasite treatments.

The FDA thinks that "adequate" freezing is -20F for at least 7 hours. Does that translate to 20F for 2 weeks? No idea.

Note that the Japanese tapeworm is apparently pretty mild ... most people who get it don't know, they just think they have chronic indigestion or something. Heck, maybe I have it ...

Page 1 of 1 All times are UTC - 7 hours [ DST ]
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
http://www.phpbb.com/