The modern ready to cook meals are packaged using retort pouches. Retort redefines the meaning of cook convenient cooking. Depending upon the cooking instructions, they can be placed in the oven directly for cooking or immersed in hot-water. They can withstand thermal processing and suited for sterilization or aseptic processing of products. It is a suitable alternative to canning. Popular cook-in- a bag applications are rice, soup, curry, meat and sauces.