I have ground dried veg to near-powder in coffee grinders (reserved for spices), a small mini-food processor, and my larger food processor. My favorite use for these is to make my own bullion powder: mix 1/2 cup powdered veg with 2 -4 Tbs arrowroot powder, 1 Tsp saltt, and several teaspoons dried herbs (parsley, dill, etc).
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