Most unique cultural foods you can get in NYC that cost under $30?

Most Americans are familiar with things like Mexican, Thai, Italian, Japanese, Chinese, Indian, Korean, Vietnamese, foods, but what’s something UNCOMMON that is only available in big cities like NYC?

It can also be dishes from the aforementioned cultures that aren’t typically served at restaurants across the US.Taking Sangrom Thai as an example, most people have had things like curry or pad thai, but nam ngiao is much less common fare.

Bonus points if it’s a hole-in-the-wall kinda place – I know fine dining can offer lots of exotic European stuff, but that’s $$$ and I’m just looking to try new flavors without breaking the bank.

Thanks for your suggestions!