One 32 fl. oz. bottle of inexpensive vodka ($12 including tax)
Four vanilla beans, split down the middle and added to the bottle to infuse
($0.50 per bean when purchased in bulk. Use one bean per cup of alcohol.)
Twenty days' time (though it can go longer)
Fabulous vanilla extract
The extract on Day 1
Total savings: $62.64. (The same amount of extract, when purchased from our local grocery store in 2 fl. oz. increments, would be $76.64.)
Though you end up with a lot, this extract will keep indefinitely--certainly a great investment if you bake a lot!