A hard candy, or boiled sweet, is a sugar candy prepared from one or more sugar-based syrups that is heated to a temperature of 160 °C (320 °F) to make candy. Among the many hard candy varieties are stick candy such as the candy cane, lollipops, rock, aniseed twists, and bêtises de Cambrai. "Boiled" is a misnomer, as sucrose melts fully at approximately 186 °C. Further heating breaks it into glucose and fructose molecules before it can vaporize.
Hard candy
Heated syrup being poured onto a cooling table
Kongen af Danmark ("King of Denmark") are Danish candies containing anise, sugar and beetroot juice. They were originally invented to persuade the king of Denmark to take the medicine he had been prescribed, as he did not like the anise's strong flavour.
Sugar candy is any candy whose primary ingredient is sugar. The main types of sugar candies are hard candies, fondants, caramels, jellies, and nougats. In British English, this broad category of sugar candies is called sweets, and the name candy or sugar-candy is used only for hard candies that are nearly solid sugar.
Sugar candy – large crystals of sugar produced from concentrated solutions, often called rock candy in America
Brown sugar candy resulting from caramelisation
In candy classification, rock-hard sugar candies that look similar to real crystals actually have an amorphous crystal structure, not a crystalline one.
Colorfully wrapped hard candy is a traditional treat for children sold in Kaziuko mugė, Lithuania
