1kg caster sugar
1 tin condensed milk
250g unsalted butter
300ml hot water
Place all the ingredients in a large heavy based saucepan and bring to the boil stirring occasionally, then boild rapidly for 5 minutes.
Turn the heat down and gently simmer, stirring from time to time until the mixture is a deep golden brown, this may take from 20-30 minutes.
Line an ANTA baking dish with baking parchment
Remove from the heat and beat vigorously with a wooden spoon for 10 minutes. This is hard work and best done in a cool area -outside the kitchen door for instance! You need to beat the mixture until it feels stiff and gritty but is still pourable.
Pour the mix into the baking dish and after about 20 minutes, score into squares and leave to completely set perferably overnight.
Store in an airtight container.