if it smells bad, definitely toss it
I was inspired by Katie E. a while back to make my own. I use a lot of vanilla, used to buy neilsen-massey madagascar bourbon pure vanilla extract, which does contain sugar. The ingredients listed on n-m bottles are water, alcohol, sugar, vanilla bean extractives. I was suprised. Do others who use n-m madascar bourbon pure vanilla have sugar listed as the third ingredient??
so one year ago I set a 1/2 gallon of vodka with 25 madagascar vanilla beans.....and I did the same thing two months ago. I should be set for a while
I toyed with the idea of adding a sugar syrup to my vanilla, since is seems to be an ingredient in the good vanillas, but I have gotten used to the pure taste and have not added any sugar.