Troy Guard opened the subterranean Bubu in the summer of 2014 in the former home of TAG|Raw Bar on a stretch of Larimer Square known for high-end dining, not fast food. Bubu's service may be fast, but the flavors and ingredients are definitely high-end. Build your own bowl from a list that encompasses Pacific Rim flavors with a few Southwestern accents, or choose from several house combos off a menu packed with tempting options. Guard's signature Hawaii Five-O, an homage to his home state, with hearts of palm, fennel, shiitakes, and a choice of protein -- grilled steak, poached chicken or shrimp, tofu and raw tuna or salmon -- is typical of the options. All of the bowls can be built on rice, rice noodles or a salad of mixed greens. Add bubu -- crunchy, spicy rice puffs -- to any dish for a burst of flavor and texture.