Nib sugar (also pearl sugar and hail sugar) is a product of refined white sugar. The sugar is very coarse, hard, opaque white, and does not melt at temperatures typically used for baking. The product usually is made by crushing blocks of white sugar, then sifting to obtain fragments of a given diameter. The sugar may also be made in an extrusion process.
It is known as pärlsocker (pearl sugar) in Sweden, and as perlesukker in other Scandinavian countries, except for in Finland, where it is calledhelmisokeri (also pearl sugar) or more commonly raesokeri ("hail sugar").
In Scandinavia, pärlsocker is used extensively to decorate various pastriesand confections, cookies, especially on top of plain Swedish bulle or Finnishpulla cakes, muffins and buns, such as kanelbullar (cinnamon buns) andchokladbollar.
In Germany it is known as Hagelzucker and traditionally used on Christmas cookies and cinnamon buns.
In Belgium, it is used in Liège waffles, while in Friesland it is used in sûkerbôle (sugar bread).