Years ago, I used the Fassbind brand of Pear William concentrate, and when the distributor stopped carrying that brand, I used Wolfberger. Now the distributor doesn't carry this flavor anymore, and I'd like to find a replacement. I would rather use a liqueur substitute than a compound or extract. I use this primarily for our brown butter pear tart, and also in our fresh fruit pound cake, so I need it to be bakeproof. I'd rather not buy Poire William because I cannot be sure I'll always get the same product at the liquor store. Where do you buy your liqueur concentrates?