Curry is an authentic Bengali food, In other parts of India they don't like fish at all due to religious facts and meat also due to the vegetarian community, but Bangladesh and Kolkata are famous for curry-type foods. But India has a diverse cooking tradition and varieties in different parts of India. Even for curry, there are many variations in Bangladesh we love spicy (chili) but in many other parts they don't like spicy foods, they prefer 'chatni' a kind of sour 'fruit achar', and many kinds of them, some region prefer dry types foods, many many food culture that you can't get anywhere in the world!
I don't know about the Aryan race!