http://brooklynbrewshop.com/themash/rec ... hand-pies/
What You Do
1.Set your oven to the lowest setting possible. For most ovens this is 170-200 degrees Fahrenheit.
2.Spread out your spent grain on a clean, ungreased sheet pan in a thin 1/4 inch layer.
3.Place in oven and let dry for approximately 7 hours. Alternately, a food dehydrator works as well.
4.4 hours into drying, pull out barley and toss to mix with a spoon.
5.Drying time may vary depending on your environment or oven. Your barley is dry when you feel absolutely no moisture remaining.
6.Using a coffee or spice grinder, process dried spent grain until it becomes a fine flour.
7.Store your spent grain flour in an airtight jar or plastic container in your pantry.
