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Filling for Cranberry Pie
Allow half cupful of water, one and a half cupfuls of sugar for one pint of cranberries. Cook seven to fourteen minutes, without stirring.
A filling only — the book assumes you already have pastry made and a pie to fill. Two things matter: the ratio of sugar to fruit, and the instruction not to stir.
- What a pint of cranberries isA pint here is the dry measure of whole berries, about 2 cups or 8 oz. A standard 12-oz bag of fresh cranberries is roughly 3 cups, so one bag calls for about three-quarters of a cup of water and a little over 2 cups of sugar at this ratio.
- The sugar is high by modern tasteOne and a half cups of sugar to 2 cups of berries is sweeter than most cooks want now; current cranberry fillings run closer to 1 cup of sugar per 12-oz bag. Cutting it works, but the filling will be looser and sharper, since the sugar is doing part of the setting.
- Do not stirThis is the hinge, though the book does not say why. The usual explanation is that stirring breaks the skins early and works the juice out, giving a thinner filling, whereas left alone the berries pop on their own and the pectin released sets the syrup. Swirl the pan if you must, and keep the heat moderate so the sugar does not scorch on the bottom.
- Judging the seven to fourteen minutesThe wide range suggests the cook was meant to judge by eye rather than by the clock. Stop when most berries have burst and a spoonful of syrup dropped on a cold plate holds a soft mound rather than running flat. Overcooked, it goes to jam.
- Cool before filling the shellCranberry filling thickens considerably as it drops below body temperature. Let it cool at least to lukewarm before it goes into pastry, or the crust will steam and turn soggy and the filling will run when cut.
- Thickening, if you want itThe period recipe relies on cranberry pectin alone. If your berries are underripe or you have reduced the sugar, a tablespoon of quick tapioca or cornstarch slurried in cold water and stirred in at the very end gives a cleaner slice.
- YieldThe recipe gives no yield. A pint of berries at this ratio cooks down to a modest amount of filling, enough for a small pie at most; scale up if you are filling a 9-inch plate.
Cranberries were one of the few fruits an American household could count on late in the year — they keep for weeks in a cold cellar and were shipped by the barrel from the Cape Cod and New Jersey bogs, where commercial cultivation had been expanding since the mid-nineteenth century. That reliability is why the pie chapter treats them as a staple alongside apple and mince rather than a Thanksgiving novelty. The terse form of the entry, giving proportions rather than a procedure, is typical of cookbooks of the era, which expected the reader to know how to line and bake a pie plate without being told.