Use a mortar and pestle (or food processor, coffee grinder, or the back of a spoon and a bowl) to crush up the dried lavender buds. I like to do this to maximise the surface areas of the plant that is exposed to the alcohol.
Add the crushed lavender to a clean glass jar. If you’re using dried lavender, fill the jar ⅓ of the way full. If you’re using fresh lavender, fill the jar ¾ of the way full.
Pour the alcohol overtop the lavender until it’s completely submerged.
Add a lid to the jar and shake it to get everything completely covered in alcohol.
Add a date and label so you don’t forget what it is or when you made it. Set it in a cool, dark place away from direct sunlight.
Leave it for 3-4 weeks. Aim to shake it every few days to keep everything covered in alcohol. If you notice that there are lavender pieces sticking up out of the alcohol, simply add more alcohol to the jar. When you use dried plants in extracts, they absorb the alcohol in the first few days and it’s normal to need to add more to keep everything submerged.
After 4 weeks, use cheesecloth or a fine mesh strainer to strain off the extract. You can do a second strain using a coffee filter to get a super clean strain. It will take a while to strain through a coffee filter but it’s worth it in my opinion.
Use a funnel to bottle the extract and label it so you know what it is. And that’s it!