"Culture" originally referred to the cultured food that varied from region to region before the advent of refrigeration, and only later came to mean the poetry and art and all that.
French cultures were cheese, wine, petit sale, sourdough bread, etc
Other places you could find bacon, hams, sauerkraut, sauer ruben, beer, kvass, injera, kimchee, pickles, tamari, miso, natto, sake, sour cream, kombucha, kefir, amazake, idli, dosas, yoghurt, lefse, tempeh, the list is as long as there are peoples in this world.
Trying to homogenize every culture together is a digestive nightmare. What we think of as "ethnic" groups are people whose bodies have adapted to their local diet and climate. Sure you can try to get everyone on board with One World Culture, like a "Jesus & McDonalds" program, if you're really into hammering the square peg through the round hole.
My friend is mostly Korean. He has flat teeth, good for grinding grains (rice) and salivates more than me. His body works best on a lot of rice and fish. Me? If I eat a lot of rice and fish, I get sensitive to it and get sick. I got fierce canines and northern european blood, and my body tends to be happiest when eating a lot of pork and sauerkraut and vegetables.
One World Culture is completely ridiculous. "Hey, you there, living in that equatorial region. We think you should hibernate from December to March, cause that's how it's done up north and we want everyone to be the same."
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No dx yet ... AS=171/200,NT=13/200 ... EQ=9/SQ=128 ... AQ=39 ... MB=IntJ