Pour the cream into a stand mixer or a large mixing bowl if you are using a hand mixer. Ensure the cream is cold for the best results.
Begin whipping the cream on medium speed. As you continue mixing, the cream will thicken and eventually begin to turn into whipped cream.
Keep mixing until the whipped cream separates into butter and buttermilk. This process should take around 5 minutes.
Drain the buttermilk and save it for other recipes, like pancakes or scones.
Add cold water to the butter and knead it to remove any remaining buttermilk. Change the water as needed until it runs clear.
Place a few ice cubes into the butter and knead until it becomes firm. This will help solidify the butter and improve its texture.
Transfer the butter into an airtight container for storage. Refrigerate for up to two weeks or freeze for longer storage.