Place the sugar in a heavy based saucepan, on medium heat. Keep stirring, using a wooden spoon or whisk
Do not take your eyes off the sugar or it may burn. Keep stirring. It will form clumps of sugar at first. It will then become an amber colour liquid with no more lumps. It will be quite hot so be careful not to burn yourself
Turn the heat to low and add the butter. It will start to bubble so be careful again. If you're not confident to do this on the heat. Remove it from the heat
Once the butter is completely melted return to the heat and simmer for one minute, do not stir
Slowly add in the fresh cream and whisk until combined. Here again it may bubble so be careful. Boil the mixture for a minute and remove from heat
Allow to cool a little and store in an airtight container. Can be stored in the refrigerator for up to a month
Notes
I used salted butter so I did not add any salt. If you are using unsalted butter you may need a pinch of salt or if you want salted caramel add about 1/2 teaspoon of salt to start with and add more if you wish depending on your taste
The caramel can be frozen for up to 3 months in an airtight container