Fully steralise your glass jar and lid, as well as the bottle you plan to store your tincture in.
Wash and dry your blueberries. Ensure you only use completely fresh blueberries with no soft spots or mold.
If you’re using fresh blueberries, add them to a glass jar and use a muddler to mash them down. For dehydrated or frozen berries, simply add them to the jar. Your jar should be about ½ full if using fresh berries and ⅓ full if using dehydrated berries.
Cover the berries completely in the alcohol. Put the lid on the jar and shake it vigorously to ensure the alcohol covers the berries completely.
Store in a cool, dark place away from direct sunlight for 6-8 weeks. Shake the jar every few days to keep the berries submerged in alcohol.
After at least 6 weeks, strain off the berries.
Use a small funnel to add the remaining liquid to your dropper bottle. Make sure to date and label the tincture so you remember what it is!