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Canned Peaches
4 pounds peaches 2 pounds sugar 1 pint water Pare peaches and cook in sugar and water, either whole or in halves, until tender. Arrange in jars, fill with syrup, and seal.
Pears, pineapples, and plums are canned in the same way as peaches. 4 pounds quinces
This is open-kettle canning: hot fruit is ladled into jars, topped with syrup, and sealed with no processing afterward. The method was standard household practice in 1907 and is no longer considered safe, so the notes below explain the failure rather than offering a revised procedure.
- No processing step at allThe recipe seals the jars and stops. There is no boiling-water bath, no measured processing time, and no instruction to sterilize jars, lids, or the headspace. Nothing in the sequence guarantees that the contents of the sealed jar have been held at a temperature high enough to destroy the yeasts, molds, and heat-resistant spoilage organisms that survive a brief simmer.
- The seal is unverifiedOpen-kettle jars seal by steam contraction as they cool, which produces a weak and unreliable vacuum. A jar that appears sealed on the counter can draw air and microorganisms in over the following weeks, and the recipe gives no way to test the seal or any guidance on storage.
- Syrup strength is not a preservative hereTwo pounds of sugar to a pint of water is a concentrated syrup as mixed, but once it is diluted by the juice of four pounds of fruit it falls far below the concentration at which sugar inhibits microbial growth. It improves texture and flavour; it does no preserving work.
- "Until tender" is not a heat treatmentCooking fruit to tenderness in syrup is a texture instruction, not a kill step, and it says nothing about the temperature reached in the centre of a filled jar. Modern fruit canning specifies a processing time by jar size, fruit, and altitude for exactly this reason.
- The substitutions widen the riskPears, pineapple, and plums are treated as interchangeable with peaches, but they differ in acidity and density, and each requires its own tested processing time. Applying one untested method across four fruits compounds the problem rather than saving effort.
- If you want canned peachesUse a current tested recipe from a reputable food-preservation authority, which will specify jar preparation, headspace, processing time, and altitude adjustment. Peaches are among the easiest fruits to can correctly, but the procedure has to come from a tested source.
- The stray line at the end"4 pounds quinces" is not part of the peach formula; it appears to be the opening line of the recipe that follows, carried over into this text.
Lowney's Cook Book was compiled by Maria Willett Howard and published in 1907 for the Walter M. Lowney Company, the Boston chocolate maker, which is why the volume leans so heavily on confectionery and desserts while still covering the full range of household work, preserving included. Home canning in this period was largely done by the open-kettle method described here: fruit was cooked in syrup on the stove, packed hot into glass jars with rubber rings and screw or clamp closures, and sealed on the assumption that boiling-hot contents would keep. Systematic processing times, based on laboratory work at the state agricultural experiment stations and later codified in USDA and extension bulletins, came into general household use over the following decades, and the cold-pack and boiling-water-bath methods gradually displaced open-kettle for fruit. The blunt one-line note that pears, pineapple, and plums go "the same way" reflects how confident and unexamined the older practice was.