Variations on a delicious theme. If you like, you can add some cubed silken tofu—put the cold tofu in the bowl and pour the hot soup over it and it will heat nicely. We’ve also done things like add bits of cooked chicken, a grating of black pepper, and even a tad of white miso paste or Vietnamese fish sauce stirred in during the heating-the-stock phase. All of those additional things are nice, but just the basic is delightfully enough. Add this to your comfort food rotation.