Americans eat food from different countries. I watched American TV sitcoms "friends" . They often eat  Italian pizza. What is a typital American food?

 I have never heard of any of those words but "steak".  I know the words, but you are not talking about food; not to me, anyway.  I am a master chef.

 I see in my Country  some  American food   like :.  Filip, steak, Twister  but healthy not in Restaurant

 American food is sometimes misunderstood.  Hamburg is a big city in Germany, hamburgers are not American, although it was the Americans who started serving them on a bun.  Hot dogs are sausages, not American.  

Potatoes, pumpkins, lima beans, corn, cranberries, chocolate, vanilla, turkey, wild rice, tobacco, tomatoes - these are some foods that only existed in the Americas.  No Swiss chocolate before 1500.  

America has contributed much to the world's cuisines.