In a mason jar place 2 cups of your chosen alcohol and 4 split vanilla beans,
Secure them with clean lids and bands.
Heat your sous vide to 130 degrees Fahrenheit.
Carefully submerge the jars in the heated water, ensuring they covered by at least an inch of water.
Process for a minimum of 1 hour.
The longer you sous vide the vanilla extract, the richer and deeper the flavor will become.
I sous vide for 4 hours to achieve the vanilla in this photos.
Remove from the sous vide bath and allow to cool completely before storage.