Each 20ml bottle mixes with unflavored rum to make about 750ml - 1L of flavored rum. Age in your barrel for that great oak color and flavor.Oak barrel aging is great for neutral spirits. The white lightning liquor will quickly soak up all of the oak flavor, but the final product can still be tweaked with these Rum Essence Flavor bottles. Rum produces the perfect blend of sweetness and bite; it's a flavor that will definitely please the palate. It's no wonder that it is commonly used in adult desserts. These simple essences come in all sorts of flavors including Amber Cuban, Caribbean, Cocorum, Jamaican and Spiced rum. Just add the essence to your favorite spirit and taste the transformation. These essences use all natural ingredients.