Salted caramel sauce made from butter, sugar and heavy cream, flavoured with vanilla extract. Caramel candies are made by boiling sugar until it turns a light brown color, then mixing in cream, butter, and vanilla. Once the mix cools down, it becomes flexible and chewy. Salted caramel is made by sprinkling fleur de sel, or any other sea salt on top of the concoction. These are sweet, salty, sour, bitter and umami. Salted caramel combines two of these, giving an effect that chefs call “flavour layering”.