Here you go Foxxy...
1/2 cup water
1/2 cup milk
4 oz butter
2lb granulated sugar
1 tin condensed milk (large)
large Swiss roll tin (buttered)
Put water and milk into a thick-bottomed pan. Add butter and melt slowly, add sugar and melt very slowly - stirring occasionally. When sugar is thoroughly dissolved bring to boil for 5 minutes. Add condensed milk and boil for another 12 minutes (approximately). When ready a small quantity will form a soft ball in cold water. Remove from heat and beat for 5 minutes or until tablet starts to thicken. Pour into the tin. Cut into bars when cool.
for a good site to see the tricks of making it go to: