Of course, nothing can beat having access to fresh ginger juice when you're making a cocktail -- but it isn't something that most people have laying around their kitchen, and if you do make ginger juice, it starts to lose its flavor almost immediately. By using a combination of dried gingers and alcohol, we've been able to create a shelf-stable ginger bitter that can bring that bite to warming winter cocktails -- especially those made with rum and bourbon -- yet also work beautifully in classic bucks and mules. In fact, 10 drops in a Moscow Mule turns it into something special.