On Tue, 30 Jan 2018 16:54:41 -0500, Dave Smith
> wrote:

>On 2018-01-30 12:11 PM, dsi1 wrote:
>> On Tuesday, January 30, 2018 at 6:48:12 AM UTC-10, U.S. Janet B.
>> wrote:
>>>
>>> Current product on the dairy shelf has absolutely nothing to do
>>> with real buttermilk. Current product is skim milk that has had a
>>> culture added to make an additional product for sale from the
>>> leftover skim milk. Janet US
>>
>> I read and understood. One gallon of milk will yield about one cup of
>> buttermilk and only 2 or 3 oz of butter. My comprehension is just
>> fine. What you're saying is that butter and real buttermilk is the
>> byproduct of making cultured buttermilk - right?
>
>I don't think so. Real buttermilk is a by product of butter production.
>Rich milk is allowed to stand, allowing the cream and milk to separate.
>The buttermilk is what is left after the churned butter is removed.

This is what I always understood buttermilk to be.