Brine

Saumure (brine) teaches one true thing: a thick piece of meat must cure from the centre and the surface together. Submersion alone salts the edges first, leaving the heart behind, so a beef joint or ox tongue needs injection before it enters the brine. That isn't fussy equipment pretending to be technique. It is the technique.

The original preparation assumed fifty quarts, a tinned copper pan over an open fire, a stone reservoir, a wooden lattice, and a special curing syringe. Here the salt, water, and brown sugar retain the book's proportions at home scale, while a stainless-steel pot, a narrow food-safe vessel, a small rack, and a meat injector do the same work. The direct saltpetre ratio cannot be transferred safely, so it is replaced with Cure #1 containing 6.25 percent sodium nitrite, weighed for the exact combined mass of water and meat. That is the one ratio changed, and safety is the reason.

The stone vat was brigade scaffolding and can go. Full circulation, exact dosing, cold storage, and injection must stay. One cook, one stove, one evening to make it, then a quiet week in the refrigerator. Cool the saumure completely before the curing salt or meat touches it; that is the step that matters most.