The two essential ingredients of miso soup are dashi, which is available in granule form, and miso paste. You can experiment with yellow, red or white miso paste - all taste different.
It's better taste with tofu, for healthy! And we, japanese cook miso soup with various vesitables, for example, tofu & onion,spinach, or taro & carrot. From Yuko in Japan - 27 Jun 2001 (Review from Allrecipes USA and Canada)
Honest - this is the real thing. The secret is the Dashi granules. I'm a teacher and had a Japanese student bring me the box his mom used to make their miso soup. Had to go to a Japanese market to get it - but it was worth it. They do sell miso with dashi flavoring - which I used. I used soft tofu, and added some sliced ginger while heating the soup. It was just like my local restaurant - and I'm so glad I can make it cheaper than the $1.50 they charge for a small bowl. Will fix it often! Miso is supposed to be very healthy. High sodium, though. The market sold low-sodium miso - may try that when I'm out of the current one. - 06 Jul 2006 (Review from Allrecipes USA and Canada)
Really great miso soup! We had enjoyed a delicious miso soup at a Sushi restaurant in Cleveland,OH and I was trying to come close to that. We actually thought this one was better. I used a red miso paste, firm tofu, green onions, and 4 thinly sliced Shitake mushrooms. Will be making this often... Oh, I bought the miso paste and dashi from Asiangrocer.com since our small town grocery stores don't carry these items. - 09 Dec 2006 (Review from Allrecipes USA and Canada)