Caramel Crackle
The most elementary sauce, candy, or candy coating comes from cooking sugar, which hardens when it cools. But beware: This gets extremely hot and can cause bad burns, so resist any temptation to stick your finger into the hot sugar or lick a coated spoon until you’re absolutely sure it’s cooled. You’ll need a candy thermometer. The main recipe makes a crunchy caramel that works as a candy coating or decorative garnish; for caramel sauce, see the variations.