Step-by-Step: How to Turn Pistachio Shells into Powder
Step 1: Clean the Shells
Rinse pistachio shells thoroughly to remove salt and residue. This is especially important to avoid harming plants.
Step 2: Dry Completely
Spread shells on a baking sheet and:
Air-dry for several days or
Bake at 200°F (95°C) for 30–40 minutes until fully dry
Step 3: Crush the Shells
Place dried shells into a blender, food processor, or mortar and grind until you get a coarse or fine powder, depending on your use.
