This is from Bill Mollison's
The Permaculture Book of Ferment and Human Nutrition, section 1.7 Vinegars, page 12, subsection "Making Vinegars." I'll quote the whole paragraph for context, and put the phrase I'm wondering about in bold.
"To make vinegar from fruit peels or cores, place fruit wastes in a large jar and cover with lukewarm water to which has been added a little vinegar, beer, sour wine, or beet juice. Stir all together and tie a muslin top over the top to exclude vinegar flies. Leave in a warm place for two to three weeks. Strain and bottle off; sterilise to store."
To my American mind, that seems to mean water bath canning the bottled vinegar. Or does it mean pasteurizing? (Except I would assume it would be pasteurized before bottling.) Or does it mean something else? I understand the reasoning behind it, i.e. to stop the acidifying process. I'm just not sure how Bill means this to be done. Can anyone clarify?