Using a sharp knife, split the vanilla beans lengthwise. This lets out the seeds and helps the infusion process.
Chop the vanilla into ½” pieces. This will increase the surface area of the exposed vanilla bean, allowing it to infuse better.
Put the chopped beans into the Mason jar. (Use about 6-8 beans for every 8 ounces of alcohol.)
Pour the alcohol over the beans, making sure they’re fully covered. Then, seal the bottle well.
Store the bottle in a dark, cool storage place. This keeps the extract’s quality and strength.
Shake the bottle once a week to help the infusion process.
Let the vanilla steep for at least two months before using it. The longer it steeps, the stronger the flavor.
If gifting, pour the finished product into bottles, add a whole vanilla bean for aesthetic appeal, cap, and label.