At the end of each olive harvest year, the World Association of Journalists and Writers of Wines, Liquors and others (WAWWJ) collects and ranks all the olive oils that have been distinguished in renowned international competitions throughout the world for their taste and quality, with the method of blind tasting based on the rules of the International Olive Council. This global olive oil ranking, called EVOO World Ranking (EVOOWR), is part of the WAWWJ world ranking, created in 1997.