Uni: I used the entire 80 gram tray for two small portions of pasta (We were going decadent here). Leaving a few pieces for garnish, I put the rest in a metal bowl and stirred to break it up and added cream (about 2 tbs) and mixed them well but did not use a bender. Because of this, it still had some small bits and was not totally homogenized but that was OK by me.
Pasta: I used Angel-hair pasta which was cooked as per instruction on the box.
While the pasta was draining, I melted butter (1 tbs) in a frying pan on medium flame. When the butter melted I added the drained pasta to coat. After I cut the fire, I added the mixture of uni and cream and coated the pasta.
I garnished it with chopped chives and nori strips and more uni on the top. I served soy sauce on the side. This is a very rich and creamy pasta. Excellent! Next time, I may mix in soy sauce before serving. Although this is a pasta dish, we stuck to cold sake which went so well with the uni.