I too say chiltepins
Edit: "Archaeologists in Mexico have discovered evidence that humans were chomping on wild chiles, called chiltepins, during prehistoric times — as far back as 7500 B.C.
The Tarahumara Indians of the Sonoran Desert in Mexico believe that chiltepins were the greatest protection against the evils of sorcery. One of their proverbs holds that "The man who does not eat chile is immediately suspected of being a sorcerer." The Papago Indians of Arizona maintain that the chiltepin "has been here since the creation of the earth."
Popular folklore holds that Texans love chile Piquins so much they eat them right off the bush. In fact, their infatuation is so great that Piquin-heads rarely travel far from home without an emergency ration of the tiny pods, either whole or crushed, in a silver snuffbox or pillbox. Texans also reputedly use the chile Piquin in place of soap to punish children for using "cuss words."