A wonderful recipe that my Japanese mother made for us and all our relatives who visited us in Okauchee when I was a child in the late 1950's. My paternal grandmother was German so I imagine she shared it with my mom. I was so glad to find it online since I did not have it. Also thankful that I remembered my mom saying there was some vinegar in the recipe too so it could be distinguished. Absolutely delicious over mashed potatoes!