Packagingconnections.com offers complete guide on retort technology human necessities have being the reason for the birth of various technologies. Food being the integral of human life has led to invention of various food processing technologies. Whether the technology is to improve the quality or increase the shelf life of the food. Retort technology is one of the best examples, which was invented way back in 1800 century. Soldiers at war front needed food that can be stored for days. Retort came as a solution in glass jars with food sealed in it.