Approximately 4 grammes comprise one sugar cube, which is comparable to one teaspoon of sugar. With sugar cubes, coffee and tea lovers can sweeten their beverages with one, two, or more sugar lumps.
An accident in the kitchen led to the discovery of the sugar cube. The husband of Julia Rad was an executive at a sugar factory. She once injured her finger while slicing huge pieces of sugar. Mrs. Rad complained to her husband about the paucity of sugar bits appropriate for teacups.
Jakub Rad developed a method for transforming sugar into square cubes. He made the first sugar cubes in 1840 and gave them to his wife. In 1843, Rad patented his sugar cube press.