Mori Sushi: Sushi Bar Menu Published December 30, 2015, 23:07 at 800 × 600 in Mori Sushi (Los Angeles, Winter 2015-16) ← Previous Next → The omakase options. What is the difference between the regular nigiri omakase and the premium nigiri omakase? Well, we asked and were told that the premium version features more Japanese fish and a few more pieces total.