Some say make dashi, some say use water. What do you do?
My wife and I use water . " Buta jiru " is also very nice assuming you eat a bit of meat and are not vegetarian . Get your butcher to slice some pork paper thin for you . Thinly slice some carrots and Japanese radish ( daikon ) if you can find one , and cut up some firm tofu in small cubes and cook all that together . Yummy !