Vanilla is a spice derived from orchids of the genus Vanilla, primarily obtained from pods of the Mexican species, flat-leaved vanilla (V. planifolia).The word vanilla, derived from vainilla, the diminutive of the Spanish word vaina (vaina itself meaning a sheath or a pod), is translated simply as "little pod". Pre-Columbian Mesoamerican people cultivated the vine of the vanilla orchid, … Indian tacos usually start with a layer of refried beans on top of the fry bread, then a layer of crumbled ground beef, followed by the shredded lettuce, diced tomatoes, shredded cheese, diced onions, and then any topping of diced black olives, sour cream, guacamole, and picante sauce.