Hernan Cortés wrote five letters to the Holy Roman Emperor Charles V, the second of which was written October 30, 1520. The letters tell of the conflict between the Spaniards and the Aztecs, his alliance with the Tlaxcala to defeat the Mexicas, and the destruction of Tenochtitlán. But the excerpt below shows they also marvel at the different products and foods in the New World.
This city has many public squares, in which are situated the markets and other places for buying and selling. There is one square twice as large as that of the city of Salamanca, surrounded by porticoes, where are daily assembled more than sixty thousand souls, engaged in buying and selling; and where are found all kinds of merchandise that the world affords, embracing the necessaries of life, as for instance articles of food, as well as jewels of gold and silver, lead, brass, copper, tin, precious stones, bones, shells, snails, and feathers. There are also exposed for sale wrought and unwrought stone, bricks burnt and unburnt, timber hewn and unhewn, of different sorts. There is a street for game, where every variety of birds in the country are sold, as fowls, partridges, quails, wild ducks, fly-catchers, widgeons, turtledoves, pigeons, reed-birds, parrots, sparrows, eagles, hawks, owls, and kestrels; they sell likewise the skins of some birds of prey, with their feathers, head, beak, and claws. There are also sold rabbits, hares, deer, and little dogs [i.e., the chihuahua], which are raised for eating. There is also an herb street, where may be obtained all sorts of roots and medicinal herbs that the country affords. . . .There are all kinds of green vegetables, especially onions, leeks, garlic, watercresses, nasturtium, borage, sorrel, artichokes, and golden thistle; fruits also of numerous descriptions, amongst which are cherries and plums, similar to those in Spain; honey and wax from bees, and from the stalks of maize, which are as sweet as the sugar-cane; honey is also extracted from the plant called maguey, which is superior to sweet or new wine; from the same plant they extract sugar and wine, which they also sell. Different kinds of cotton thread of all colors in skeins are exposed for sale in one quarter of the market, which has the appearance of the silk-market at Granada, although the former is supplied more abundantly. . . maize or Indian corn, in the grain and in the form of bread, preferred in the grain for its flavor to that of the other islands and terra-firma; patés of birds and fish; great quantities of fish—fresh, salt, cooked and uncooked; the eggs of hens, geese, and of all the other birds I have mentioned, in great abundance, and cakes made of eggs; finally, everything that can be found throughout the whole country is sold in the markets.