For the 4-ounce small bottles, you will need 2 beans per jar. (I cut them in each in half to fit in the bottles more easily.)
For the large 4-cup bottle, you will need 16 beans.
Cooking time listed above does not include the 4-6 weeks needed for the vanilla to soak.
*Most real vanilla extract that you purchase at the store is made with alcohol. But if you would like a non-alcoholic version, I've read that you can substitute food-grade vegetable glycerine in place of vodka. The same ingredients amounts and instructions in the recipe above apply.