The Manzanilla Olive Tree is the most widely grown variety in the world. It is a Spanish olive used for all things related to olives: oil, stuffed fruit, salted green or black. The fruit can be picked and used at different phases of its maturity depending on the intended use. If you have eaten an olive, you most likely ate a Manzanilla. Spain exports more olives than any other country and Manzanilla is their primary variety due to its exceptional quality and versatile use.