Salvianda
Also known as Salvianda salt, Salviande
The European long-cure salt: table salt carrying about 0.6 per cent nitrite and 0.9 per cent potassium nitrate with a little dextrose, used pure as the whole salt of a slow dry-cured sausage.
Salvianda is the nitrate-bearing partner to Colorozo, and it is to the long dry cure what Colorozo is to the short one. It is table salt blended with about 0.6 per cent sodium nitrite and about 0.9 per cent potassium nitrate, with a little dextrose folded in, and like all the European nitrited salts it is used pure, as the whole salt of the recipe rather than added on top of it. It is the everyday European stand-in for the American Cure #2.
Its two curing agents work across two timescales. The nitrite acts at once, fixing the fresh colour and giving the early guard against Clostridium botulinum and Salmonella while a young sausage is at its most vulnerable. The potassium nitrate is the reservoir: a slow store that the meat's bacteria reduce to fresh nitrite across the weeks and months of ripening, keeping the protection renewed and lending the deep, matured flavour of a long-aged product. The pinch of dextrose helps the nitrite develop colour, but it is far too little to feed a fermentation, so a fermented sausage still needs its own sugar added.
In real terms Salvianda is used exactly as Colorozo is, at about 2.5 per cent of the meat weight, 25 grams to the kilogram, as the entire salt. At that rate its nitrite delivers roughly 150 milligrams per kilogram, with the nitrate laid down as the slow reserve on top. This is where it parts from Cure #2, which at 6.25 per cent nitrite is a concentrate weighed at a tenth of that, 0.25 per cent, with the balance of the salt added separately. Same destination, different vehicle, and the same unbreakable rule: the rate belongs to the product, and the 2.5 per cent of a nitrited salt must never be crossed with the 0.25 per cent of a concentrate.
It suits the products its reservoir is built for: the thicker, slower-drying dry sausages of the southern European tradition, salame, cacciatore, fuet, chorizo and nduja, and whole-muscle charcuterie aged over weeks. For short, cooked or quickly eaten products, where there is no time for the nitrate to reduce, Colorozo is the right salt instead. Note too that Salvianda takes its nitrate as potassium nitrate, where Cure #2 uses sodium nitrate; the effect in the meat is the same. As always, work the dose to the current legal ceiling for the product and country.