This dish is packed with nutrients, and so easy to make. It’s also a great dish to enjoy with guests. Chicken meatballs have the very nice subtle shiso flavor and they become fluffy after cooked. I like adding a generous amount of coarsely grated daikon (I highly recommend you use Onioroshi daikon grater for the nice crunchy texture for grating daikon). They give both texture and more flavor to the dish.
For seasoning, I use both white tamari and soy sauce for more complex flavor (and also to keep the broth from becoming too dark), but you can use just soy sauce if you like. You can also adjust the seasoning with extra sea salt at the end. But, please remember, this dish is served with Sansho Ponzu Sauce, so the seasoning should be minimum.
Make sure to save enough broth, so you can enjoy the shime (finishing course) of soba noodles!