Forget everything else on the menu at Sushi Den. Not that there's anything wrong with it, but if you're walking into a place that has not just the best sushi in Denver but some of the best sushi outside of Japan, why would you want to eat anything else? What sets Sushi Den apart is simple: It's the fish. But actually, it's not so simple -- the way Sushi Den gets that amazing fish is incredibly complicated and took owner Toshi Kizaki years to work out to his satisfaction. You see, much of the fish served here comes straight from the fish markets of Japan, where Toshi's brother goes every day to buy supplies that then are loaded on a plane, flown to Los Angeles, flown to Denver, picked up by Toshi and put on that night's menu. Which means the fish on your plate were swimming in the ocean less than 36 hours before. That kind of sourcing and shipping is expensive, time-consuming -- and totally worth it when you want the best.