Tuna is a high-protein low-fat food that is loved by many people for toppings, snacks, and so on. In recent years, with the increasing single-person households, small-packaging is on trend, and tuna is also being sold in pouches. In addition, many products have been released to meet the diverse needs of consumers such as tuna that is taken with rice without cooking and oil-free tuna for people who are on diet.