They found a place where saltpeter was very thinly and erratically distributed.
Drain off the liquid the next day and add a pound of saltpeter to it.
In 1792, it was the Venetian Embassy, under the Terreur a saltpeter factory.
Dissolve the saltpeter in the vitriol and add it to the water.
Corned and smoked meats are usually preserved with saltpeter.
In pickling the ...