I have seen these yogurts (Oikos Triple Zero and Dannon Light and Fit) at many stores with a Kosher K symbol. I know that a simple K is not a reliable kashrut symbol, but I was wondering if Kosher K is any different. I did not see any obviously treif ingredients (ex. gelatin), but I was wondering if there was any reliability to this symbol?
It doesn’t appear that what is written there represents any supervising agency. You might want to call the OU at 212-613-8241