A major difference between our long shelf life tofu and other tofu in the market today is the award-winning, aseptic-packaging process. During this packaging process, the food inside the package is never exposed to light, air, or bacteria, all of which can lead to spoilage. Developed by Tetra Pak of Sweden in 1979, this proprietary packaging is unique. In fact, it was voted “...the number one food science innovation of the past fifty years” by the prestigious Institute of Food Technologies headquartered in Chicago, Illinois. Aseptic packaging locks out the "bad" (light, air, bacteria) and locks in the "good" (nutrients, amino acids, isoflavones, and flavor). This means our tofu offers you the freshest flavor with no sour after taste and no bacterial contamination while at the same time assuring you of complete nutrient retention.