The origins of the word 'labneh' comes from Arabic. The word 'laben' means yoghurt in Arabic and so labneh derives from it and literally means 'too much yoghurt'.
It is traditionally made by straining most of the liquid out of yoghurt. Surprisingly it isn't high in fat and has a particular texture that elevates it above ordinary cream cheese without actually tasting like yogurt.
It contains no preservatives, no additives and no "E" numbers.