Apparently, the product discussed is Sodium Nitrate.
Readily avalable relative cheap (under 10€) and even sent “prime” if member from Germany’s Amazon. So to cold and to hungry, hint, hint…
https://www.amazon.de/s?k=prague+powder+pink+curing+salt&crid=3OBA2PB5WI89S&sprefix='prague+salt%2Caps%2C77&ref=nb_sb_ss_ts-doa-p_2_11
