We should not eat that type of food which is not exposed to sunlight and air during cooking. In today�s time following are the utensils where the food don�t getSunlight and air-: a)Refrigerator b)Pressure Cooker c)Microwave Oven Killer of nutrients the pressure cookerWhen we cook food inside thepressure cooker, the water is heated and the vapour starts developing. Pressure is developed on the food from the upper side in the form of vapour and from the bottom in the form of heat. Because of this two way pressure the food breaks down and becomes soft, and we think food has been cooked. But it has not been cooked, it has been broken down. As per Ayurveda:Food which has taken more time in the farm to grow, it will take more time to cook also. Eg-Dals(Gram) take about 6-8 months to grow in the fields, so it will take more time to cook.Micronutrientscame slowly to thefruits, stems and flower. So it will take that much time to dissolve theprotein,vitamins,calcium.