Quickly and cleanly extract a sample of wine from your home winemaking batch to test its alcohol content, clarity, or flavor. Wine thiefs from E.C. Kraus allow you to extract just a bit of wine without introducing unsanitary equipment into the batch of wine, or having to siphon or pour the wine into another container. Wine thiefs can also be used to take beer samples. As a general rule, always use sanitizers to sanitize your wine thief and other wine equipment and prevent the growth of unwanted bacteria.