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Canned Gooseberries
4 pounds gooseberries 2 pounds sugar Stem and wash gooseberries, cover with sugar, and let stand over night; if green, add one quarter cup water; bring quickly to boiling point, fill jars, and seal.
This is open-kettle canning: hot fruit ladled into jars and sealed with no processing afterwards. It was standard practice in 1907 and is no longer considered a safe way to put up food.
- Why the method failsFilling and sealing hot relies on the cooling jar pulling its own vacuum, with nothing to sterilize the headspace, the jar rim or the underside of the lid. Seals formed this way are unreliable and frequently fail weeks later, and there is no processing step to destroy mould and yeast introduced during filling.
- No processing time or temperatureThe recipe gives no boiling-water-bath time, no jar preparation and no headspace. Those are the variables that determine whether the pack is shelf stable, and they cannot be inferred from "fill jars, and seal."
- The sugar is not doing preservative workTwo pounds of sugar to four pounds of fruit is a light pack, well below the concentration that inhibits microbial growth in a jam or a preserve. This is canned fruit in syrup, and it depends entirely on the seal.
- Barely brought to the boil"Bring quickly to boiling point" means the fruit reaches temperature for seconds at most. Gooseberries are acidic enough that botulism is not the concern here; spoilage organisms, surface moulds and fermentation are, and a momentary boil does not address them.
- The jars of the period were differentThe jars of the era, whether wire-bail or zinc-capped Mason types, sealed with a rubber ring and behaved differently from modern two-piece lids. Modern lids are designed to be processed, not simply capped over hot fruit.
- If you want to put up gooseberriesUse a current tested recipe from a food-preservation authority, which will specify jar size, headspace and processing time. Gooseberries take well to canning; it is this procedure, not the fruit, that is the problem.
- On the note about green fruitThe quarter cup of water is presumably there because underripe gooseberries release less juice under sugar overnight. It suggests the recipe anticipated fruit picked hard and tart, as gooseberries often were for pies and preserves.
Lowney's Cook Book, compiled by Maria Willett Howard and published by the Walter M. Lowney Company of Boston, is a chocolate manufacturer's promotional cookbook that grew into a full general household manual, preserving chapter and all. Gooseberries were a common New England dooryard fruit at the time, valued precisely because they were sour and firm and set well without added pectin, and they were usually picked green for pies and preserves rather than left to ripen. Their near-disappearance from American kitchens came shortly after this book: white pine blister rust, which uses currants and gooseberries as an alternate host, prompted federal and state restrictions on growing Ribes beginning in the 1910s, and several states kept those bans for decades. A recipe that a 1907 reader would have considered wholly unremarkable now describes a fruit most American cooks have never handled.