Inspired by Ms. Maangchi, I embarked on a search for a recipe for jahngjohreem. It is the ultimate Korean comfort food. It is a form of salt preserving beef with soy sauce, I think, but has evolved into a kind of signature side dish that is never seen in restaurants except for the really good ones, and typically never unless to complement a dish like jook (with abalone, yum).
I remember I would rate Korean mother's by their cooking abilities and in particular with several index dishes. The first is kimchi, which hardly anybody makes at home any more, and the other was jahngjohreem.
My dad had a downloaded video from a Korean cooking show whose recipe I followed (picture attached), but I would be curious to see Maangchi's spin on this staple.