When it comes to vacuum sealing brown sugar, there are a few things you need to keep in mind. First of all, brown sugar is more prone to clumping than white sugar, so you'll want to make sure that your brown sugar is finely ground before vacuum sealing it. Secondly, because brown sugar is more hygroscopic than white sugar, meaning it absorbs moisture from the air more readily, you'll want to make sure that your storage container is airtight. If not, your brown sugar will become hard and lumpy.
Here's how to vacuum seal brown sugar for long-term storage:
1. Place the desired amount of brown sugar into a food processor and pulse until finely ground.
2. Transfer the ground brown sugar into a clean, dry storage container with a tight-fitting lid.
3. Using a vacuum sealer with an attachment designed for canisters, seal the container according to the manufacturer's instructions. Be sure to remove any excess air from the container before sealing it shut.
4. Store the sealed container in a cool, dark place until ready to use. Once opened, be sure to consume within six months for best quality.