Cut the beef into bite sized pieces. Scrub the burdock root with a nylon vegetable brush or similar to remove any dirt, and slice very thinly on the diagonal with a vegetable slicer.
Put the burdock root and the [A] ingredients in a pan, and simmer over medium heat for 3 minutes. Skim off any scum.
Add the beef, and simmer over low heat until there's no moisture left in the pan.
It's done when there's no moisture left in the pan. It burns easily so watch it carefully.
Story Behind this Recipe
I love sweet and salty simmered beef and burdock root. I've been making it with slightly different amounts of seasoning ingredients over some times, and eventually settled on this recipe.
The skin of burdock root has a lot of fragrance and nutrition, so rather than peeling the roots just scrub off the dirt. Cut burdock roots do change color, but since they are simmered in a brown sauce there's no reason to soak them in water. They lose some nutrients if you do.