A very common and modern way to enjoy this dish is to make it into a pasta dish.
Takes basically 15 minutes to prepare (mostly the time to boil the pasta) so it's very popular with busy households, single bachelors, and students.
Pasta (for 2)
3T of (loose) Mentaiko
1t of Soy Sauce
Finely julienned Nori for Garnish
Take your al dente pasta out of the pot and into a large mixing bowl. Add butter and mix. Then add mentaiko and mix. Then add soy sauce and mix. Plate and garnish.
So simple and very fulfilling. For a 15 min dish, it's tops in my book.