Real salted caramel requires patience, dexterity and a sugar-thermometer, none of which come naturally to me, but a salted caramel sauce can be rustled up in a matter of moments. True, in those moments you wouldn’t want to walk away from the stove, but the saucepan provides captivating enough watching to make that agreeable. I have given a range of quantities for the salt, but I tell you now that I go for the full whack. It might be wise to start off with half a teaspoon and add more to the finished sauce as needed, bearing in mind that the colder this is served the more the flavours will be muted and therefore need bolstering…. Final note: I use unsalted butter as was told when young that salt is added to inferior butter to mask any rancidity or unpleasant flavours and also because I prefer to be in control of salinity myself. For US cup measures, use the toggle at the top of the ingredients list.