We also used the crock churn for butter and buttermilk. But a setup like this,, which I honestly have never seen before, could have been for a larger production. Many times any excess milk left after the cream rises was fed to the hogs on our farm. And even with our two cows when you figure milking twice a day and the cows giving at least a gallon each, (our holstein gave much more than that ) its still a lot of milk !! You would have left a couple of gallons with the cream for buttermilk !! If I had thought about something like this,, I would have certainly used it !! I hated having to wash and clean those crock churns !! You do have to dip off any cream from the drinking milk, but usually we left the cream in ours !! Taking off the cream made it taste like store bought milk !!