<human>:  How do I make a sugar cube?
<bot>: To make a sugar cube, you will need granulated sugar, water, and a mold or container. Combine equal parts of sugar and water in a pot over medium heat, stirring until the sugar dissolves. Bring the mixture to a boil and cook until the temperature reaches about 300°F (hard crack stage). Pour the hot syrup into a mold or container and allow it to sit until it cools and hardens. Once cooled, the sugar cube can be removed from the mold.