Max Yasgur owned the dairy farm that produced the most buttermilk in the Northeast through the 1960s.
The development of refrigeration and better road transport, in the late 1950s, has meant that most farmers milk their cows and only temporarily store the milk in large refrigerated bulk tanks, from where it is later transported by truck to central processing facilities
 These proved impractical for transport by road or rail, and so the milk churn was introduced, based on the tall conical shape of the butter churn

