Short answers, pulled from the story.
The word smetana emerges from the common Slavic root sъmętana and derives directly from the verb sъmětati, which means to remove or to dump. This term spread across most languages of Eastern Europe and Central Asia under this name.
Producers create smetana by souring heavy cream without homogenization, allowing the cream to separate naturally over time through traditional methods. Modern supermarket varieties often contain between 10% and 40% milkfat, while some thick products reach up to 70% fat content with added thickeners like gelatine or starch.
Smetana functions as a key ingredient in Central, Southeastern, and Eastern European cuisines where cooks blend it into soups, vegetable salads, and cole slaw. Dumplings such as pelmeni, pierogi, and varenyky arrive topped with smetana, and pancakes including bliny, palacsinta, naleśniki, oladyi, and syrniki receive the same treatment.
Czech Republic regulations mandate at least 10% fat for products labeled smetana, while products containing 30% fat or more qualify as whipping cream known as smetana ke šlehání. Finnish naming conventions reserve smetana exclusively for high-fat products above 30%, whereas ordinary low-fat versions carry the name hapankerma in Finland.
A German medical book published in 1677 recommended Schmant or Milchraam as the best part of milk, and a lexicon from Osnabrück of 1756 described smanten as Bier Schaum resembling foam on beer. Historical sources indicate that fattier varieties once held higher status than modern reduced-fat options and traditionally possessed higher fat content similar to clotted cream.