Open up your vanilla beans. First, I sliced my beans lengthwise to open them up. If you use Grade A beans, they’ll have a higher moisture content than Grade B. Either works fine for vanilla extract. You’ll see inside the tiny specs that look like the specs in natural vanilla ice cream! Try not to lose any in the process. You can leave the beans attached at the end or cut them entirely apart. It doesn’t matter as far as the flavoring goes. Here's a chart that shows you the proportions of vanilla beans to vodka: Place the beans in your container. I slid all the beans into my glass jar, trying to make sure all those little specs went along for the ride.
Completely cover the beans with the alcohol. This will prevent bacteria from growing. I used a funnel to make it easier. Put the lid on and give it a few shakes. I used a chopstick to push down any bits of bean that were sticking up out of the vodka, and ended up adding just a little extra vodka to the mix.
Store the vanilla out of direct sunlight and at room temperature. You’ll want to shake it occasionally – every couple of weeks to once a week is great.
Wait. You can use your vanilla after a month, but you won’t get the full flavor until about a year has passed. It will have a rich, dark color and delicious aroma!
As you use your extract, you can replace the alcohol you used. Shake it up afterward. You can keep doing this for several years or until the flavor starts to wane. Then, you’ll want to take out the used beans and replace them with fresh beans.
.As long as the beans are completely submerged, your vanilla extract can last for several years. If you remove the beans, it will last indefinitely.