If you are into making cocktails at home, you have probably tried and mastered some of the classics-the Margarita, the Martini, the Manhattan. But if you’ve stretched your mixology skills beyond that, you’ve, no doubt, played around with various mixers to add depth and flavor to your cocktail creations. Luckily, there is now an amazing variety of fruit and spice-infused syrups, bitters and shrubs that can be found at any good liquor store or specialty food shop. What is a shrub, you say? Am I referring to a leafy bush? No. A shrub is a fruit-infused vinegar syrup. You may think adding vinegar to any drink would be odd, but the complex, fruity acidity of a shrub syrup adds a brightness and depth that is surprising and very pleasing.