You Will Need:
Whipping cream, small jar (baby food size works best)
Pour a small amount of cream into a jar. Seal tightly. Have child shake the jar while you supervise. After several minutes of serious shaking a clump of butter should form. Pour off the liquid (whey) and chill the butter.
The more cream you add the longer and harder you need to shake. You may need to help young children by starting the shaking. Older children may want to mold the butter into shapes for special occasions. This can be done spreading the butter on wax paper then freezing or getting it very cold. Cut with a cookie cutter. Fancy restaurants sometimes press a decoration into the cold butter.