Sheila Dillon looks at the role of food producers and farmers in combating the Sicilian mafia.The Sicilian "Cosa Nostra" emerged around the citrus groves of Palermo in the 19th century as control of farming and food production fell into the hands of estate managers and middle men.From that time the influence of the mafia over food production and distribution on the island has been extensive. In recent decades the work of investigators like Giovanni Falcone and Paolo Borsellino did much to lessen the power of the mafia but its involvement in the food business continues to this day.Now, a new generation of entrepreneurs and anti-mafia campaigners are using food to send a message around the world that Sicily is breaking away from that past. Producer Dan Saladino.