No, buttermilk is not yogurt as it does not have a live yeast culture.
Originally it was what was left from churning butter. Try this link to make
a buttermilk substitute.
http://www.ochef.com/250.htm

Thomas



"Pandora" > wrote in message
...
> Is buttermilk a sort of Yogurt? If I have not buttermilk how can replace
> it?
> Cheers
> Pandora
>