What's the Difference Between Light and Dark Brown Sugar?

What's the difference between light and dark brown sugar? If a recipe calls for one, can I substitute with the other? We tested it and found out.

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Light Brown Sugar vs. Dark Brown Sugar - Difference Between Light and Dark Brown Sugars

Dark Brown Sugar

Light Brown Sugar vs Dark Brown Sugar: What's the Difference

The Difference Between Light Brown Sugar and Dark Brown Sugar—and

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