A really simple toffee sauce, or if you cook it for longer, it can go from being soft and gooey to a hard candy form. It's really yummy, and I have a sweet tooth, so I have it on cake, ice cream, all sorts of things. A really easy and sweet toffee sauce, that can be made and stored so easily. I suggest 1/6 of a tin for a serving, because it is a very rich sauce.
Some suggest that you pierce two holes in the top of the tin near the rim so it doesn't explode. I have never had one explode on me, but it could just be luck. This would be an extra precaution, to be done during step 1.