Supposedly invented by Bonnie Prince Charlie while hiding from the Redcoats (ie English) on the Isle of Skye.  Quite frankly the story smacks of marketing department babble, all they needed to work into the story was a scottish terrier and some shortbread to make it perfect.  If this was an improvement on the scotch he was being given to drink then it must have been pretty rotten stuff and I am not sure he was as popular with the locals as legend suggests.  The nose has no real whisky notes, just sweet, citrus and ginger.  It smells like Drambuie.  The taste is cloyingly sweet, a bit like cough syrup as it coats the mouth.  As the sweetness fades some more familiar whisky notes appear along with some spices like ginger and clove.  With a little ice to cut it the texture becomes a little less syrupy and I could detect some oak notes.  Overall I could summarize as chewing a pencil that had been dipped in sugar and cough syrup.

I much much much prefer the more subtle and whisky led Drambuie made with 15 year Speyside single malt.  All that said, since moving back to Texas I can say with certainty that there has more often than not been a bottle in my collection (and I don't mean the same one).  The reason is the fact that the only whisky cocktail I drink is the occasional Rusty Nail...  over ice.  In the heat of a Texas summer I find a Rusty Nail works well in backyard bbq scenario and also does a great job in helping me consume (and avoid wasting) any disappointing scotches I have acquired.  Hence the standby bottle of Drambuie.