FYI commercial extract has 13.35 ounces (385 grams) of beans per gallon of liquid (128 fluid ounces). I have made vanilla extract using 40% alcohol (80 proof) beverages including rum, vodka, and brandy. I used 40 beans weighing 2 grams each or a total of 80 grams, per fifth of a gallon of booze (a 750mL bottle). It took at least 6 months to get all the flavor out of the shredded beans at warm room temperature. No difference in taste from any of the base booze. Homemade extract tastes super good in both baked and unbaked recipes.

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