Add the cream to a bowl and start whisking on medium or high speed.
After 3-5 minutes the mixture should separate. This is the butter fat forming and separating from the water - buttermilk.
When the cream separates, tip the whole mixture into a sieve and gently squeeze the liquid out.
Wash all the remaining buttery liquid - buttermilk out with cold water, by submerging the fat into the water and squeezing the yellow liquid out. The butter mixture will become lighter as you repeat the process.
Squeeze out the water to form the butter using butter pads or your hands.
Add seasoning to your butter (salt, herbs or spices) by gently knead it in before you pat the butter for the last time to its final shape.
Your freshly prepared butter is now perfect for eating straightaway or can be frozen for up to 3 months.