This is Nickey's version of Umani, a Japanese root vegetable dish. This is a relatively simple recipe, just a lot of ingredients! Surprise ... because you never know what's going to be put in it! The prep time is long because of all the soaking involved. Time does not include the time to prepare the ichiban dashi broth. You will need 2 cups broth to prepare this dish. The dashi may be frozen or refrigerated; it will keep for 3 days. If you don't want to make dashi from scratch they do sell instant dashi in the oriental section of most grocers.