Why Does Brown Sugar Get Hard?
If you’re a baker, then you know brown sugar can form into rock-hard chunks that are difficult to break up. Unlike other sugars, brown sugar hardens when exposed to air. This is because molasses loses moisture, making the sugar crystals stick to themselves. So, if it’s kept in an unsealed bag or a non-airtight container, it’ll likely become hard as a rock. Luckily, there are a few tricks to soften it in a hurry so you can continue baking those heirloom brown sugar desserts.