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Canned Pears (Should be firm to retain their)
Pears should be firm to retain their form after cooking. It is not necessary to pare them. Cut in halves; remove cores. Drop into cold water to prevent their turning dark in color. Weigh them. Put one-third their weight of sugar in the preserving kettle. Add one pint water to each pound sugar. Boil five minutes. Add the pears. Cook gently until skin is readily pierced with a straw splint. Pack into hot sterilized jars, filled to overflowing with the boiling syrup. Seal immediately. Do not attempt to cook many pears at one time, for those that are cooked too long crumble and lose their form. Many people add a few slices of lemon, or a piece of ginger root for additional flavor. Bartlett pears are best for canning.
This is open-kettle canning: hot fruit packed into hot jars and sealed with no processing afterward. It was standard practice in home kitchens for generations and is no longer considered a safe method for shelf-stable preserves.
- No processing stepThe jars are sealed on the strength of the boiling syrup alone. Nothing brings the sealed jar and its contents to a controlled temperature for a measured time, so any mold, yeast or bacteria introduced during packing — from the jar rim, the funnel, the lid, the air — survives in a sugar syrup that is a good growth medium. A vacuum seal formed this way is also unreliable and can fail silently weeks later.
- Pears sit near the acidity lineFruit is only safe on the shelf when it is reliably acidic. Pears are usually acidic enough to be treated as an acid food, testing around pH 3.9 to 4.2, though very ripe fruit can drift upward toward 4.6, the threshold below which Clostridium botulinum cannot grow. Current guidance for canned pears therefore still calls for a timed boiling-water process (and for Asian pears, added bottled lemon juice). This recipe has no processing at all.
- Skins left onThe instruction not to pare them puts orchard soil and surface microbes straight into the jar. That matters much more in an unprocessed pack than in one that is heated in the sealed jar.
- Sealing hardwareJars of the kind this was likely written for -- zinc caps with rubber rings, or glass-lidded types -- do not behave like modern two-piece lids, and the modern lid is designed to vent and seal during processing. Substituting one for the other does not make the method sound.
- What is still worth reading hereThe technique notes are good and still true: firm fruit holds its shape, small batches prevent the pears crumbling, and Bartletts remain the standard canning pear. The straw splint is simply a doneness tester — the point at which the flesh gives easily. A ginger root or lemon slice in the syrup is a period touch worth borrowing.
- If you want canned pearsUse a current tested recipe with a measured hot-pack, added acid where specified, and a timed boiling-water process for your jar size and altitude. The syrup proportion here — one-third the fruit's weight in sugar, one pint water per pound of sugar — is not the part of the recipe that fails.
Open-kettle canning dominated American home preserving from the mid-nineteenth century until federal and land-grant extension work displaced it, and books of this era print it without comment because it was the established household method. The logic seemed sound: boiling syrup, sterilized jar, immediate seal. What it could not account for was recontamination in the seconds between kettle and lid, and the difference between a jar that looks sealed and one that has been heated through. Bartlett's dominance is also of its moment — the variety, generally traced to an English seedling later propagated by Enoch Bartlett in Massachusetts, was the commercial canning pear of the period and still is, prized for flesh that softens evenly without going to mush.