You can definitely dry spent grain! In fact, it's a great way to extend the shelf life of the grain and find alternative uses for it. As a sommelier and brewer, I've had plenty of experience with spent grain and have found drying it to be a useful technique.
To begin the process of drying spent grain, it's important to first squeeze out as much liquid as possible. This can be done by placing the grain in a colander or strainer and letting the excess liquid drain out. You can even gently press the grain to help remove any remaining moisture. By doing this, you'll be starting with a drier base for the drying process.
Once you've removed as much liquid as possible, there are a couple of methods you can use to dry the spent grain. One option is to use a food dehydrator. Simply spread the spent grain out onto the trays of the dehydrator and set it to a low temperature, around 120°F (49°C) or lower. Leave the grain in the dehydrator for several hours, checking on it periodically to ensure it's drying evenly.
If you don't have a food dehydrator, you can also dry the spent grain in your oven. Preheat your oven to its lowest setting, typically around 170°F (77°C). Spread the spent grain out onto baking sheets in a thin, even layer. Place the baking sheets in the oven and prop the oven door open slightly to allow moisture to escape. Stir the grain occasionally to ensure even drying. Depending on the moisture content and temperature of your oven, the drying process can take anywhere from 4 to 8 hours.
It's important to note that the drying time can vary depending on the moisture content of the spent grain and the method you're using. The goal is to remove as much moisture as possible, resulting in a dry and crumbly texture.
Once the spent grain is completely dry, you can store it in an airtight container or bag. The dried spent grain can be used in a variety of ways. For instance, it can be ground into flour and used as an ingredient in bread, cookies, or other baked goods. It can also be added to granola, energy bars, or used as a topping for yogurt or ice cream. The possibilities are endless!
Drying spent grain is a simple and effective way to extend its shelf life and explore alternative uses for it. Whether you choose to use a food dehydrator or your oven, the process involves squeezing out excess liquid and then drying the grain at a low temperature over several hours. Once dried, the spent grain can be incorporated into various culinary creations. So, don't let your spent grain go to waste – give drying a try and discover the many ways you can enjoy it!