This article is from the Food Preserving FAQ, by Eric Decker ericnospam@getcomputing.com with numerous contributions by others.
Trichinae can also be killed by freezing the pork according to the
following chart:
Temperature Grp1-days Grp2-days
----------- --------- ---------
5 deg F 20 30
-10 deg F 10 20
-20 deg F 6 12
 
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