SC - canning
Mark Schuldenfrei
schuldy at abel.MATH.HARVARD.EDU
Wed Jul 30 09:51:37 PDT 1997
The wax seal seems to be a traditional way of sealing and expelling the
air before the use of vacuum-sealed (Ball, etc.) jars came into
widespread use. It might be a case of someone forgetting why it is there
and assuming it was still essential. Or, I could be talking through my
hat, which sometimes happens too.
I know the US Government has many handouts on how to can, safely. Probably
as a throwback to the WWII era. Ask your state of federal Agricultural
representative.
Tibor
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