When the niku miso is done, stir in the toasted sesame seeds.
* In the US, yellow miso is often mislabeled "white miso". True white miso (shiromiso) is a unique style of miso from Kyoto that's made with a larger percentage of rice, which makes the miso very sweet. If you bought something labeled "white miso" in the US, chances are you have regular yellow miso. If you're unsure what kind of miso you have, taste a small amount, if it's very sweet, reduce the amount of sugar in this recipe.