Yogurt's got a culture. (no offence)
For an European 500 Miles is a long distance, for an American 500 years are a long History
In one you don't want to jerk the hook, but in the other you don't want to hook the jerk.
If you leave the jar alone for 200 years it'll develop a culture.
If you leave yoghurt alone for 2000 years it'll develop a culture.
A cup of yogurt.
If you leave yogurt alone for 200 years it will finally develop its own cultures