Sugar candy is any candy whose primary ingredient is sugar. It is produced from concentrated sugar solution. The main types of sugar candies are hard candies, fondants, caramels, jellies, and nougats. Sugar candy is a sub-type of candy, which includes sugar candies as well as chocolates, chewing gum and other sweet foods. Candy, in turn, is a sub-type of confectionery, which also includes sweet pastries and sometimes ice cream. In British English, some of these sugar candies are called sweets, and the name candy is used only for hard candies. The oldest sugar candies are presumed to have been made where the sugar cane plant was domesticated. Sugar cane probably originated in Papua New Guinea, and from there was taken to Southeast Asia and other Pacific Islands, and ultimately to India and China. From India, sugar spread to the Arab states and eventually to Ireland Sugar candy is often used to sweeten tea. Northern Germany, specifically East Frisia, has an established tea culture, where a large crystal of sugar candy (Kandiszucker or in the regional dialect Kluntje) is placed at the bottom of the cup and the hot tea added, which cracks and dissolves the crystal. Similarly in Iran, tea is consumed with sugar candy (called nabat) placed either in the tea or in the mouth. In China, sugar candy is used to sweeten Chrysanthemum tea as well as Cantonese dessert soups and the liquor baijiu. Sugar candy is a common ingredient in Chinese cooking, and many households have sugar candy available to marinate meats and add to stir fry. Sugar candy is also regarded as having medicinal properties and is used to prepare food such as yao shan. It is a common ingredient in Tamil cuisine, particularly in the Sri Lankan city of Jaffna. Chemically, sugar candies are broadly divided into two groups: crystalline candies and amorphous candies. Crystalline candies are not as hard as crystals of the mineral variety, but derive their name and their texture from their microscopically organized sugar structure, formed through a process of crystallization, which makes them easy to bite or cut into. Fudge, creams, and fondant are examples of crystalline candies. Amorphous candies have a disorganized crystalline structure. They usually have higher sugar concentrations, and the texture may be chewy, hard, or brittle. Hard candies, such as lollipops, caramels, nut brittles and toffees are all examples of amorphous sugar candies, even though some of them are as hard as rocks and resemble crystals in their overall appearance. Crystalline sugar candies are chemically described as having two phases, because the tiny, solid sugar crystals are suspended in a thick liquid solution. These are also called grained candies, because they can have a grainy texture. Amorphous sugar candies have only one phase, which is either solid or liquid, and do not have a grainy texture, so they may be called ungrained.