About bunuelos "Most countries have their version of bunuelos, or fritters, either sweet or savory, and they are certainly great favorites throughout Spain and Latin America.In many parts of Mexico bunuelos are made of a stiffer dough, which is rolled out thin anywhere up to 12 inches in diameter and then fried crisp and staked up ready for use.329-330) About churros "At every Spanish festival or carnival, one is sure to find a huge cauldron of bubbling oil where Churros are quickly fried, shaped into loops, and threaded into reeds that are then knotted for easy carrying.
Churros are nothing more than fried batter of flour and water, but they are essential to a Spanish breakfast, dipped either in sugar or in a cup of coffee or thick hot chocolate...If one is out on an all-night binge--a juerga, as it is called--it is the custom to end the evening by eating Churros and hot chocolate at the churreria, or churro store, which opens by dawn." ---The Foods and Wines of Spain, Penelope Casas [New York: Knopf] 1982 (p. Make a depression in the middle of each and fill with chichiarrones. ed.) iii.81 Burritos in the northern part of Mexico and in the southwestern part of the United States are quite different.Chili, which some condsider Texas's state dish, was unknown in Mexico and derived from the ample use of beef in Texan cooking."Refried beans" are a mistranslation of the Mexican dish frijoles refritos, which actually means well-fried beans... Food historians tell us Tex Mex cuisine originated hundreds of years ago when Spanish/Mexican recipes combined with Anglo fare.
Tex Mex, as we Americans know it today, is a twentieth century phenomenon.
Tex Mex restaurants first surfaced ouside the southwest region in cities with large Mexican populations. Diana Kennedy, noted Mexican culinary expert, is credited for elevating this common food to trendy fare. But it is foreign in that its inspiration came from an alien cuisine; that it has never merged into the mainstream of American cooking and remains alive almost solely in the region where it originated..." ---Eating in America, Waverly Root & Richard de Rochemont [William Morrow: New York] 1976 (p. A combination of the words "Texan" and "Mexican," first printed in 1945, that refers to an adaptation of Mexican dishes by Texas cooks.
It is difficult to be precise as to what distinguishes Tex-Mex from true Mexican food, except to say that the variety of the latter is wider and more regional, whereas throughout the state and, now, throughout the entire United States." ---Encyclopedia of American Food and Drink, John F. 325) [1950s] "Mexican restaurants, whos popularity coincided with the arrival of large numbers of Mexican immigrants after 1950, have for the most part followed the from and style of what is called "Tex-Mex" food, and amalgam of Northern Mexican peasant food with Texas farm and cowboy fare.
There are several foods closely related to bunuelos and churros: sopaipillas & fry bread.
In other countries, simliar recipes evolved as doughnuts, funnel cake, and waffles.
Smith [Mexican American Food] Pre-Hispanic Cooking, Ana M. fritters were known to many cultures and cuisines; each evolving according to local tastes and customs.