The charm of "Yokohama Haikara" is...
(1) Eye-catching package design
(2) Authentic taste supervised by a pastry chef
(3) Long-term storage at room temperature for 2 years
The cake itself was developed over a two-year period by a female researcher at a major can manufacturer, a planner and developer at a confectionery manufacturer, and a female pastry chef who trained at a famous patisserie based on the research know-how of a major can manufacturer. It is a confident work that has made a hypothesis in all processes from fabric making, filling, winding, and retort sterilization (a sterilization method using high temperature and high pressure) to find the best finish through repeated verification.
If we reduce the manufacturing process, we can reduce the cost, but we are particular about the quality of the taste and make it in the same process as the patisserie.
It is worth mentioning that it is the only manufacturing technology in the Japan that uses the heat of the retort sterilizer to bake the dough while sterilizing it (Patent No. 6338317).
When the cans are filled with pre-baked dough, bacteria attach to them in the process and multiply in the cans. In the case of retort sterilization, in which sterilization and firing are performed simultaneously in cans, complete sterilization is possible, and a shelf life of two years is achieved at room temperature without using preservatives. Normally, if a product is sterilized by applying heat again to a product that has been cooked, the flavor will be lost, but with this method, it will be finished in a delicious taste without overheating.
Currently, manufacturing is outsourced to Nonaka Co., Ltd. (Kofu City, Yamanashi Prefecture), a 77-year-old bean paste factory. There are few factories that have equipment for confectionery and retort sterilizers, and thanks to the backup and technical guidance of a major can manufacturer, we were able to find a factory that was willing to work on it. In order to produce a smooth texture and authentic taste, manual labor is interspersed rather than complete mechanization, and quality is maintained efficiently and laboriously.