Brown sugar is a type of sugar that retains some of the natural molasses found in sugarcane or sugar beets. This molasses gives it its characteristic brown color and adds a distinctive caramel-like flavor. There are two main types:

1. Light Brown Sugar: Contains less molasses and has a milder flavor.
2. Dark Brown Sugar: Has more molasses, giving it a richer flavor and darker color.

Brown sugar can be used in a variety of recipes, including baked goods, marinades, and sauces. It’s also sometimes used as a substitute for white sugar when you want to add a bit of extra flavor.