To dream that you are drinking some kind of the cocktail, means that you are trying to relax and have the good time. If the cocktail is enjoyable to drink, you will succeed in your life. If it is too strong, you should be careful while having too much fun. The dream could also indicate the fact that you try to forget the bad things in your life and concentrate on good ones.
Read more about dreaming of Cocktail (alcoholic beverage) in other dream meanings interpretations.