Food safety is an increasingly important public health issue. Safe food can be regarded as the food which is free or has acceptable level of contamination that may occur at any point in the growing, preparing, processing, storing, selling or serving of food. WHO recommended Five Keys to Safer Food are:
(1) keep clean;
(2) separate raw and cooked;
(3) cook thoroughly;
(4) keep food at safe temperatures; and
(5) use safe water and raw materials.