Only bigos and jerzynowa are Polish. The rest of dishes you mentioned are Hungarian. They're quite popular in Poland though

If hamburger can be American, then gulasz can be Polish. It's been hundreds of years, at what point am I allowed to call my great-great-great-great-grandma's recipe my culture?

"Jerzynowa" is a funny misspelling. It's Levenshtein distance 1 from two completely different soups.

Oh yeah right, it looks like I invented a new soup and immediately made an orthographic error in its name with this misspelling :p

As for the hamburger - its origin history is quite complicated with its name mainly attributed to its early marketing in USA, so I think that's a bad example for your good point. So skipping that I think there are many dishes that get adopted into the local dishes, getting more popular than in the origin culture, but I don't think gulasz is one of them, as it's one of the most known examples of Hungarian kitchen

Lickmyballs, or polishmyballs? Funny nickname.

I specifically picked an example that's super mega deeply ingrained in American cuisine, because this is the level of how super mega deeply ingrained gulasz is in Polish kitchen. About half of traditional Polish dishes - even the famous schabowy - are more recent inventions than gulasz. You're not going to argue schabowy is actually German and not Polish, are you?

And gulasz is also known as stoofvlees. A beef stew…

> If hamburger can be American, then gulasz can be Polish.

And hot dogs are... what exactly?

> “Ever eaten scubbo? No? Nothing like a bowl of scubbo when you’re hungry. You can put anything in scubbo. Pork, beef, mutton, rabbit, chicken, duck… anything. Even rats, if you’ve got ’em. It’s food for the marching man, scubbo. Got some on the boil out there right now. You can have some of that, if you like.”

> The squad brightened up.

> Thoundth good,” said Igor. “What’th in it?”

> “Boiling water,” said the corporal. “It’s what we call ‘blind scubbo’"

Monstrous Regiment, Terry Pratchett (GNU)

> There are several Polish dishes that boil down to throwing whatever is edible into a single pot and boiling for hours.

Pretty much what my spouse calls "everything soup" or "refrigerator stew"

> gulasz is like very thin gravy

If you make thin gulasz, you're doing a goulash tasting soup. When properly done, you should be able to stand a spoon upright in it.

Yes. Goulash is a very thick soup. Not gravy.

Gravy is super thick. Goulash soup is thick by soup standards but very thin by gravy standards. Goulash is in between gravy and goulash soup.

Honestly, I really didn't expect HN of all places to argue about whether goulash soup counts as goulash.