You will need:
1 tin condensed milk
2 cups (500ml) castor sugar
125g butter or stork baking margarine
(**add right at the end - 5mls vanilla essence and 80 g of chocolate - I have used milk white cookies and cream flavour as well as minty crisp** the more popular one) Will try it later today with dark chocolate.
It begins to set quickly after the chocolate is added in so work fast, remembering that it gets incredibly hot.
Slice into blocks after 15mins in the fridge.
Sweet tooths all around.