Start by preparing the sauce. In a bowl, combine the silken tofu and mentaiko, mixing until smooth.
If desired, add soy sauce to taste for extra flavor.
Cook your choice of noodles or udon according to package instructions, or use almost zero-calorie noodles for a lighter option.
Once the noodles are ready, drain and mix them with the creamy mentaiko sauce.
Serve the dish topped with chopped green onion, nori, and a drizzle of chili oil for added spice.
