I added in shiitake and cremini mushrooms, miso, the optional mirin, some of the optional sugar and flying horse soya sauce ( I also added a small amount of the feared msg). I think I added some ginger too. I let it simmer then added in frozen udon noodles, green onions, and tofu fried in more mirin. The green tea added the perfect background taste and my miso soup loving fiance was thrilled. I was happy too, thanks!