LONDON, Dec 14: Scientists have found the earliest evidence of prehistoric cheese-making from a study of 7,500-year-old pottery fragments that are perforated just like modern cheese strainers. Milk production and dairy processing allowed early farmers to produce food without slaughtering precious livestock, and making cheese turned milk into a less perishable food that was more digestible for a population who at the time would have been intolerant to the lactose contained in milk. (agencies)