If grandma did it, you know it works.

Well, my grandmother never had this problem.

This seems weird, right?

dark brown sugar and light brown sugar - Southern Living

Credit:Caitlin Bensel; Food Stylist: Torie Cox

Heres why:

Why It Works

Brown sugaris a mixture of cane sugar andmolasses.

Dark brown sugar contains more molasses than its light brown counterpart.

Brown sugar has a higher water content than cane sugar because it contains molasses.

So how does a piece of bread prevent the sugar from drying out?

Bread has a relatively high water content.