If you happen to visit the province of Valencia in Spain during the last week of August, you might very well find yourself in a bit of a messy situation. La Tomatina is an annual festival held in the small town of Bunol were participants engage in friendly warfare by throwing tomatoes at each other. Yes, I know what you are thinking. There are starving people all over the world, surely this is wasting food? Well, the answer is no. All the tomatoes used are not good for consumption so there is no waste. Once banned in the 1950s for not having a religious significance, the festival is a booming event that can host up to 40 000 participants every year.