What is the most delicious party food you have ever tried?

I am due to host a party for some very sophisticated 17yr old foodies in a few weeks.

I would love some ideas on amazing party food that you may have tried.
I love this group because I can make them anything and they LOVE to eat it, so there are no limits on calories, allergies or any fussy eaters.

Even if you don’t have a recipe, link or a name, descriptions will do. I can always look it up or something similar.