Whether you're chilling by yourself or hanging out with friends, this triple sec aperitif is great to sip on. It is an orange-flavoured liqueur and because of this, it is often served with a slice of orange. The word 'sec' means dry in French so this implies it is a very dry alcoholic drink. Some of the most famous brands are Cointreau, Grand Marnier and Curacao. It combines well with mixers to add extra flavour to the taste. A good liqueur brand will have a smooth taste that can mix well to make cocktails. The alcohol percentage is rather high so if you drink it neat, be sure to pace yourself in order to prevent a hangover.