Chocolate chip cookies, cinnamon rolls, pecan pie—some of the most universally-beloved desserts start with brown sugar. Made from a combination of granulated white sugar and molasses, brown sugar adds ...

How maddening to reach for the brown sugar, expecting it to be soft and fluffy, only to find a rock-hard clump in the bottom of the box. Or how about this: Brown sugar is on sale, so you stock up.