When in Mexico (it has been many years) I recall eating mainly yellow corn tortillas. When I asked about this one answer was, " We eat the cheaper corn, the white corn is sent to the US." After recently revisiting the white vs. yellow tortilla debate, I did some cursory research without finding any definitive answers. I found that yellow corn is imported to Mexico from US, that yellow corn is used mainly as feed, that there are definite opinions on which tortilla tastes better. I prefer the taste of white, but appreciate the hardiness of yellow..
Would like more info/opinions! Thanks!