This is probably derived from the Old English cyrnel 'kernel', due to the appearance of butter grains after milk has been churned.
The use of butter is mentioned in biblical works[3] and the earliest butter churn vessels belonging to Beersheba culture in Israel were found in Bir Abu Matar going back to Chalcolithic period between 6500–5500 BC.
Some cultures still use a process similar to this, whereby a bag is filled with milk, tied to a stick, and vigorously shaken.
The staff used in the churn is known as the dash, dasher-staff, churn-staff, churning-stick, plunger, plumper, or kirn-staff.
This device, invented by Alfred Clark, consisted of a barrel attached to a rocking chair.