The grains may be uncoloured, or come in different pale (artificial) colours.
It is similar to “Sparkling Sugar”, and like it will reflect light, but it is smaller and has paler colours.
To make Sanding Sugar, sugar syrup is dried, screened, and coloured.
Sanding Sugar is used on top of baked goods, to make them crunchy, and to make them sparkle and be colourful. It is usually sprinkled on before baking.
It is also used around the rims of drink glasses.
Commercial bakers buy it in 50 and 100 pound (22 to 45 kg) bags.
Another coarse sugar, granulated sugar.
Store as you would sugar.
Literature & Lore
“Jack Ford’s peculiar pastime was buying and selling; and he bid fair to follow in the footsteps of his uncle, a country merchant, who sold a little of every thing and made money fast. Jack had seen the sugar sanded, the molasses watered, the butter mixed with lard, and things of that kind, and labored under the delusion that it was all a proper part of the business.” — Louisa May Alcott (1832-1888). Little Men: Life at Plumfield with Jo’s Boys. Chapter 8.
“Sanding the sugar” means to adulterate sugar with fine sand, for profit.