Add salt and pepper to food? Then you need bitters for your spirits based drinks. Its the difference between 'good' and 'great'.
Orange and Bourbon Bitters...do you need a tasting note?
Although you only add a dash or two of bitters, because they are so integral to a quality and flavour of a mixed drink, it is important to only use the best....assuming you are also using great quality spirits! Give your drinks that 'mixed by an expert' flavour with this bitter.