atcnick, "wedlinydomowe.pl" webpage contains good, old, polish recipes, and for curing meat they use mixture of salt and nitre: użyte do peklowania:
1. sól warzonka - 0,10 kg
2. saletra - 0,005 kgAlthough nowadays we just use "curing salt" (or "prague powder") instead of mentioned mixture, ie. when recipe says: "sól warzonka - 0,10 kg", we just add 0,10 kg of "curing salt". It's simple and easy. But please remember, that polish "curing salt" contains 99,4% salt and only 0,6% sodium nitrite and according to english wikipedia.org, curing salt is a combination that is 93.75% salt and 6.25% sodium nitrite, so curing salt available in USA may contain 10 times more preservative than ours! I do not know if this is true, so as vtec said, it is best to contact ligawa or ChefPaul privately in this case. And finally Happy New Year