Curtis Duffy made sure every detail was perfect before opening his refined temple last December, and the diligence shows. Grace, the most pedigreed horse in the high-stakes Randolph Street Derby, came out of the gate at a sprint. Duffy’s seasonal tasting menus (10 to 12 courses, $205), crafted meticulously in a glassed-in kitchen, overflow with jaw-dropping ideas and flavors. One gorgeous dish features a scallop that’s been pan-seared then chilled, lending it an almost foie-gras texture that transforms as you eat it with anise hyssop foam and hibiscus. Smart details such as bread pairings and season-themed bathrooms set the experience apart. But service, while ridiculously generous, is not quite at four-star level. Yet.