When it opened in 2014, Salt & Grinder was part of an early wave of upscale sandwich shops that helped to usher in a new kind of deli scene in Denver. The New Jersey-style deli was created by longtime Denver restaurateur and chef Frank Bonanno, who was known at the time more for his fine dining restaurants, like Mizuna, Osteria Marco and now-closed Bones. Related Articles Restaurants, Food and Drink | Where to stream the movie about Casa Bonita’s reopening Restaurants, Food and Drink | Pop culture-influenced doughnut shop opens today on Tennyson Street Restaurants, Food and Drink | Breakfast spot on East Colfax will close after 5 years Restaurants, Food and Drink | Two-time “Top Chef” competitor opening new restaurant in LoDo this week Restaurants, Food and Drink | Mexican wrestling meets Food Network flair at new Denver restaurant But on Sunday, the Bonanno Concepts restaurant group announced on social media that the decade-old lunch counter at 3609 W.