I clipped this recipe 10 years ago for my 1st Annual St. Pat's Day Dinner. I have made it every year since. My family loves it and when I mention I might make a different dessert for a change, there is an uproar of protest. I don't use as much whiskey as the recipe calls for - only about 1 teaspoon per goblet and about 1 tablespoon in the cream. Sometimes I just used canned whipped cream. It's delicious either way. I've never really timed the preparation, but I would say it's about 30 minutes.