Put puree through a sieve or fine mesh strainer to remove seeds
Pour onto fruit leather sheets
Flip the leather over about halfway through the process.
Dry at 140°F for 6-8 hours until brittle
Powder
For Whole: Grind in a bullet blender, run through a fine mesh strainer to remove seeds, store.
For Puree: Grind in a bullet blender and store.
Video
Notes
Dried blackberries can be used in oatmeal or baked goods, but are not a great snack on their own.Puree works best for doing blackberry powder since it cuts the drying time down significantly.Condition: Place food into a large glass jar, shake once a day for a week to check for any signs of moisture buildup or sticking that isn't released by an easy shake of the jar. If you find signs, put it back into the dehydrator to dry more. Storage: Store in an airtight container for up to two years in a dark, cool, dry place.Condition the powder:While not mandatory, it can be helpful to put your blackberry powder onto a lined cookie sheet (line it with parchment paper or a fruit leather sheet), put it into a warmed, but turned off oven. (preheat to it's lowest temp, then turn it off). Leave it for about fifteen minutes, then pull it out, let it cool for five, and store. This helps with clumping. Store with a moisture absorber.