I give up! Searched internet to find out how long you boil the condensed milk for. It can be anywhere from 1-5 hours. Can anyone enlighten me through experience?
Buy it ready boiled - I do. Carnation Caramel it's called. You can buy it in Morrisons and Somerfield, probably other supermarkets aswell, but I haven't looked.
I have a recipe where the 14oz can of condensed milk is heated gently in a pan together with 4oz of butter, 4oz of brown sugar and 2 tablespoons of golden syrup, stirring, until the butter has melted and the sugar dissolved. Bring to a gentle boil and cook for 7 minutes, stirring all the time until the mixture thickens and turns a light caramel colour. Pour this into a pastry case and leave until cold.