Using a sharp knife, slit the vanilla beans vertically on a clean chopping board. Transfer them into the sterile glass bottles
Pour the vodka into the bottles, using a funnel if required. Seal the lid and store in a cool, dark place for at least 6 weeks before using. Shake the bottle at least once a week to help infuse better
Use as required in baking or other recipes. Once it gets over, do not discard the vanilla beans, instead add more vodka to the same bottle to make more extract. You could add a new vanilla bean or two to enhance the flavour.
You can gift vanilla extract - they make great edible gifts. They make for beautiful festive decor too.