In the early days of Japanese curry or any curry really, you would use a curry powder spice mix, or make your own curry spice mix if you were a really good cook with time on your hands. As time went on, the Japanese developed curry roux blocks that had everything you needed for the curry base in an easy to use package. Everyone still uses these boxes of curry roux today to make a big pot of tasty curry at home. Japanese style curry is a big home dish and a quick meal out for almost all Japanese people since it is a universal comfort food there.Convenience took another step forward in 1968 when Otsuka Foods introduced curry in a foil pouch. This allowed Japanese women to make a curry dinner at home with heat and ready curry sauce if they were working late. Their Bon Curry (bon meaning good) was the world's first commerical retort pouch product and it has been a popular product since launch. These foil pouches are now even easier to use as they have been replaced by plastic microwaveable pouches.