[dairy product] Smetana is one of the names for a range of sour creams from Central and Eastern Europe. It is a dairy product produced by souring heavy cream. It is similar to crème fraîche (28% fat), but nowadays mainly sold with 10% to 30% milkfat content depending on the country. Its cooking properties are different from crème fraîch... Found on http://en.wikipedia.org/wiki/Smetana_(dairy_product)