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To Preserve Beef Liver for Gravy
279. Take a clear liver, and rub it well all over with four ounces of coarse sugar or treacle; let it lie twenty-four hours, then rub it well all over with two ounces of saltpetre, four ounces of bay salt, and one ounce of common salt. Let it lie in the pickle for three weeks, turning and rubbing it every day. Hang it near the fire to dry, and when used cut slices off and boil them in as much water as is required for the gravy. Add herbs, or an onion, if approved.
This is a dry-cure for offal, intended to keep a beef liver usable as a gravy base for months without refrigeration. It cannot be reproduced safely in a modern kitchen, and the notes below explain what specifically goes wrong.
- The saltpetre is far out of rangeTwo ounces of saltpetre is roughly 56 g of potassium nitrate. The recipe gives no weight for the liver, but on any plausible weight for a whole beef liver the cure delivers nitrate at several thousand parts per million — well above the limits set for cured meats today. There is no way to know how much the liver actually absorbs, and no safe way to guess.
- No weights, no temperaturesThe recipe gives no weight for the liver, no brine strength, no curing temperature and no target for how dry the finished piece should be. Every control that makes modern curing predictable is absent.
- Drying near the fireHanging cured meat in the warm air beside a hearth holds it for days in the range where bacteria multiply fastest. Liver, being soft and moisture-dense, dries far less readily than a ham or a flitch of bacon.
- Bay saltBay salt was coarse sea salt evaporated in shallow bays or salt pans, sold unrefined and variable in composition. It is not the same as a modern measured curing salt, and treating the two as interchangeable is part of why the original quantities cannot be translated.
- TreacleThe treacle or coarse sugar in the first stage is there to soften the cure and feed colour and flavour development, not to preserve. Coarse sugar of the period was less refined than today's granulated.
- If you want the flavourA gravy built on fresh liver, browned and simmered with onion and herbs, gives much the same savoury depth in an afternoon. For any cured or preserved meat, use a current recipe with stated weights, nitrite levels and temperatures.