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Gay-Lussac, in his "Mémoire sur la Fermentation," alludes to Appert's method of preserving beer-wort unfermented for an indefinite time, by simply boiling the wort and closing the vessel in which the boiling fluid is contained, in such a way as thoroughly to exclude air; and he shows that, if a little yeast be introduced into such wort, after it has cooled, the wort at once begins to ferment, even though every precaution be taken to exclude air.
The canisters for since Appert's time stone jars have been generally superseded by tin canisters contain on an average about 10 pounds each; and out of 643 of these which were opened on the first day's examination, no fewer than 573 were condemned as being utterly unfit for food.
Gay-Lussac, in his "Mémoire sur la Fermentation," alludes to Appert's method of preserving beer-wort unfermented for an indefinite time, by simply boiling the wort and closing the vessel in which the boiling fluid is contained, in such a way as thoroughly to exclude air; and he shows that, if a little yeast be introduced into such wort, after it has cooled, the wort at once begins to ferment, even though every precaution be taken to exclude air.
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