A gourmet exploration entertainment show that finds the old store and delves into the special trade secrets that allowed it to survive for a long time.
| Title | Long-established Trade Secret |
|---|---|
| Genres | |
| First Air Date | 2021-08-23 |
| Last Air Date | 2022-01-17 |
| Episode Runtime | 01 Hours 01 Minutes |
| Total Season(s) | 2 |
| Total Episode(s) on All Seasons | 2 |
| Runtime | |
| Production Companies | Unknown |
