Holy Basil aka Tulsi (Ocimium sanctum) is an easy to grow summer annual here in Northern California. Start by seeding the a few plants in the spring. Then by mid summer there will be plenty to harvest. I love the tea made from Tulsi but sometimes I find it nice to have it in a ‘ready to use’ form where tea isn’t an option. That’s where tinctures come into the picture.
When making a fresh plant tincture, you want to use as close to 100% alcohol as possible to prevent the final product from spoiling. Fresh plant contains a lot of moisture and if the their isn’t enough alcohol (roughly 25%) in the final product, the medicine will not last. If you don’t have access to that high strength of alcohol, dry the plant and use any vodka (40% alcohol) to cover the herbs. How much alcohol do you add? With fresh plant, it’s what herbalist call a 1:2 (1 part plant material, 2 parts alcohol). With dry plant material, I would recommend a 1:4 or 1:5. The alcohol and plant material should be packed into an airtight jar and put in a dark place for two weeks. Remember to shake the jar once a day. At the end of the two weeks, strain through muslin and store in either a jar or dropper bottles.
FYI: Methow Valley Herbs has a great page about the properties, history, and use of this plant. You can view their website here.