I'm surprised there isn't a unique name for that.
"The staff used in the churn is known as the dash, dasher-staff, churn-staff, churning-stick, plunger, plumper, or kirn-staff."
https://en.wikipedia.org/wiki/Butter_churn#Types_of_butter_c...
My dad drinks the stuff as a special treat. It just smells like sour milk to me...
Am curious, is it the enzymes or the acidity? yogurt also tenderizes meat, but I always thought it was the mild acidity that does that, similar to how vinegar can also tenderize meats.
Not that it matters, as long as the job is done :)
The buttermilk you buy in the store is basically fermented milk. It has a totally different flavor and texture. It is also delicious and you should totally make fried chickenburgers with it. You should also make biscuits, pancakes, cornbread, etc with it (assuming you eat those things) because buttermilk has an amazing flavor that's really unlike anything else.
The only product/by-product I never liked was the buttermilk left over after churning the butter, but I guess that is an acquired taste.