Healthy and flavoursome. What are the advantages of steam cooking? 💨 Steam cooking is gentle way of preparing food such as vegetables, fish and meat using steam. The steam is heated to temperatures between 30 and 100 degrees. As the food is cooked or blanched without any fat, most of the vitamins and minerals are preserved. When steaming food, it is placed on a large, perforated stainless steel tray, surrounded by hot steam which cooks food evenly. In principle, anything you can boil can also b