450g (1lb) Soft Brown Sugar
225g (8oz) Black Treacle
110g (4oz) Unsalted Butter
2 tbsp Water
1 tbsp White Vinegar
Place the butter, water and vinegar into a heavy bottomed saucepan, heat gently until the butter has melted.
Add the sugar and black treacle, allow to fully dissolve, this takes about 20 minutes.
Boil the mixture to a temperature of 138�C (280�F).
Remove from the heat, allow the bubble to decrease.
Pour the mixture into a well oiled 18cm (7 inch) sandwich tin.
When the mixture has cooled a little mark the surface into squares with a knife.
When cold break into squares, wrap in cellophane and store in an airtight container