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By Audrey Ellis
Published 1971
It is essential to have a proper sealing machine. The fruit or vegetables and liquid (water, syrup or brine) are sealed in the can before processing. The canning machine is usually simple to operate, directions being supplied by the makers. The sealing is done in two stages. The lid is rolled over the flange of the can, then the lid and can pressed together to make an airtight seal.
Size of cans: Cans are available for use with most machines in 2 sizes, the 1 lb. size of 16 fl. oz. capacity and the A2½ size with 1½ pint capacity. There are three types of cans, each type being specially suitable for a particular purpose.
