https://contingentmagazine.org/2020/06/25/curry-before-colum...
I always assumed pre-Columbian Indian food had fieriness and heat from pepper (bite into a whole peppercorn - it's plenty fiery), so there was a pre-existing cultural affinity for that flavor. This to me explained the rapid assimilation of chilli peppers into virtually every regional Indian cuisine.
some of the spices you mention were originally from the Malacca area, but were later grown in South India as well.
But of course it goes both ways. I just had traditional breakfast in an isolated Zapotec village in Mexico. But of course the cheese wasn’t part of it until the Spaniards arrived.
Black nightshade berries native to Europe are easily mistaken for the latter stages of potato plant development, for example.
dish: makki ki roti (roti made from corn flour) with sarson kaa saag (mustard greens, cooked). this is a very common, even iconic, Punjabi dish. I've only tried it once myself. didn't like the corn roti much. the mustard greens were fine.
https://en.m.wikipedia.org/wiki/Makki_ki_roti
https://en.m.wikipedia.org/wiki/Sarson_ka_saag
snack: whole corn roasted on a fire, i.e. corn on the cob. bhutta in hindi. ubiquitous in india.