Whenever I have a glut of citrus fruits I like to grate the peel to use in recipes later. I dry the grated peel on a cookie sheet then put it
Jar with a tight lid and store it in my spice cub board.
After several months the peel become hardens in the jar or clumps. I know I am dehydrating the peel completely but it must be picking up some moisture just the same .
Is there something I can mix with the dry peel to keep it free flowing?