Finally, running out of time, I decided to just puree the garlic in the food processor and dehydrate it on sheets of parchment paper. If it didn't work, I'd be no worse off than if the garlic had gone bad waiting for me to process it.
Believe it or not, IT WORKED! And it was so easy! The hardest part was peeling the garlic....
Homemade Garlic Powder
Peel the garlic and remove the root end. If it's old and starting to sprout, remove the green sprout as well as it can be bitter.
Puree the garlic in a food processor.
Spread the puree on parchment paper and dehydrate at no more than 110 degrees F. I left it in the dehydrator for over two weeks - I wanted it to be REALLY dry!
Break up the dried sheets and transfer into blender or processor bowl. Grind to a powder.
Store in glass jars. I will transfer this to Miron jars but wanted to show what it looked like.