On this evening the regular course had 7 uni - 3 aka uni, uni risotto, and then this trio. They are interspersed throughout the meal and reappear almost at random, sort of like the head melody in a long jazz piece. I can understand why Yasuda-san emphasizes so much uni - the quality here was exceptional for every variety that was served on this night. In this picture there are murasaki, bafun and ensui (seawater preserved) sea urchins, all with completely unique flavors and richness.