That is due to the dry versus wet measurement.

T E wrote:

> Was told to convert nonfat milk to buttermilk add juice of fresh lemon
> to milk and let sit 10 min.'s before using.
> Wondering if any one here has heard of this or tried it.
> I found the nonfat powdered buttermilk I've been searching for N you
> guess it, the carb count was higher than regular high fat buttermilk.
>