If you said cream separator, you'd be right! A cream separator is a centrifuge that separates the heavier skim milk from the lighter cream. While cream will naturally float to the top of the milk when left to sit for a time, a cream separator speeds up the process (we normally wait 24 hours before skimming with a spoon). Additionally, you get more cream using a separator than by spoon skimming (20-25% more cream, depending on your separator). The cream is then used to make butter. 🧈😋 Extra but

Antique Cream Separator: A Game-Changer for Dairy Farmers | LoveToKnow