The aperitivo is "aperitif'' in french (it is basically a refreshment offered before dinner) but in Italy it is not exactly the same...ít is much much cooler! Let's say that it begins in every single cafe, bar or concept store at 6pm sharp and lasts until 10pm. What you have to do is order a drink for 10 or 12 euro and you get all you can eat among the variety of the italian apetizers!!! it is soooooo deliciouuuus! well it depends which aperitivo you go to and how much you are hungry! It is always a great way to meet people and socialize! some places get very busy and u feel like your in cocktail party!
Some aperitivos are more "chic" like the Marc Jacobs one in Milan via Brera (check the pic below)
Some Others in the other part of Milan (corso di porta tichinese) are more for students as it's the all you can eat policy! It's always crowded, sometimes you have to be in queue to get food. They usually offer a very large buffet of all kind of food. It is really worth it if you want to have a cheap dinner :) dont miss it if you happen to be anywhere in Italy!!!