Dd is having a dozen friends over for a BBQ for her 18th birthday (fortunately, weather is looking promising for the preferred date). I would like to offer them a cocktail but don't want to make anything that they won't like (I favour zesty cocktails like Margheritas and Moscow mule) and assume they would like something sweet-ish, since dd has turned her nose up at a Margherita and similar.
Any recommendations please?