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Barberry and Sweet Apple Preserve
Simmer a quart of barberries in two quarts of water about an hour; then drain in a bag. Use this water in cooking ten pounds of sweet apples, pared, quartered, and cored. Remove the apples from the liquid as they become tender and add more water as needed. When all are cooked, add about five pounds of sugar to the water in which the fruit was cooked, let boil, and then skim, put in the apples, and cook until they look clear. Store as canned fruit.
A large old-style preserve that uses barberry infusion as the cooking liquid, so the apples take on colour and tartness rather than being cooked with the berries. It is scaled for a household putting up fruit by the bushel; the quantities divide cleanly.
- The hinge: barberry water, not barberry pulpThe berries are simmered and strained out, and only their liquid is used. Squeezing the bag hard will push through pulp and seeds and cloud the finished syrup; let it drip, or press only lightly.
- Sourcing barberriesCommon barberry (Berberis vulgaris) is restricted or subject to eradication in parts of the United States because it hosts wheat stem rust, so fresh berries are hard to come by. Dried Iranian barberries (zereshk) sold in Middle Eastern groceries are the same fruit or a very close relative; roughly 4 oz dried, rehydrated, should stand in for the quart of fresh.
- A quart of berriesMeasured by volume, as fruit usually was. A quart of fresh barberries is roughly 1 lb.
- "Sweet apples"A distinct nineteenth-century category, meaning low-acid varieties such as Tolman Sweet or Sweet Bough that hold their shape and taste flat on their own, which is exactly why the sour barberry liquid is added. Golden Delicious, Gala or Fuji are the closest supermarket equivalents; avoid a tart cooking apple or the preserve will be sharp.
- Scale and yieldTen pounds of apples with five pounds of sugar should fill somewhere in the region of a dozen pint jars. Quartering the recipe (2 1/2 lb apples, 1 1/4 lb sugar, 1 cup berries, 1 pint water) is more manageable and behaves the same.
- Cooking the apples in batchesLifting each piece out as it turns tender is the whole technique here, and it is worth the trouble: sweet apples collapse quickly and unevenly. Use a slotted spoon and a shallow pan so you can see them.
- "Until they look clear"The visual endpoint is real. The quarters go translucent as syrup replaces the water in the flesh, perhaps 20 to 30 minutes at a gentle boil depending on the apples.
- "Store as canned fruit"The recipe gives no processing detail at all. Current practice is hot jars, hot preserve, 1/4-inch headspace, then a boiling-water bath — follow a present-day tested processing time for your jar size and altitude rather than the old instruction to simply seal and set aside.
Barberry hedges were once common on New England farms, and the fruit — too sour and too seedy to eat out of hand — earned its keep as a source of acid and colour in a kitchen with no lemons in winter. Pairing it with sweet apples is a straightforward piece of household chemistry: the insipid apple supplies bulk and body, the barberry supplies the tartness and the red tint, and sugar binds the two. The plant's decline explains why the recipe reads as a curiosity now; common barberry's role as the alternate host of wheat stem rust was demonstrated in the 1860s and had been suspected long before that, and the federal and state eradication campaigns that followed pulled the shrub out of American farmland on a large scale, taking the preserve with it.