What is the difference between brown sugar and dark brown sugar?
Also to know is, does dark brown sugar make a difference?
Not really. For the most part, dark and light brown sugars can be used interchangeably in recipes, as technically dark brown sugar simply has a slighter higher molasses content. However, more molasses does mean dark brown sugar has slightly higher levels of acidity and moisture.
Similarly one may ask, when a recipe calls for brown sugar should you use light or dark?
The difference between light and dark brown sugar is the amount of molasses that's been added to the sugar. Light brown sugar is subtle, while dark brown sugar has a more intense molasses flavor. You can use them interchangeably in any recipe that calls for brown sugar, per your preference.
Dark brown sugar (also called old-fashioned brown sugar) tends to be reserved primarily for recipes like baked beans, gingerbread, spice cakes, and other dishes where you really want a deep molasses flavor. You might also see granulated brown sugar in the grocery store.