Located in Rome’s gritty but gentrifying Pigneto neighborhood, Co.So. is a surprisingly upscale diamond in the rough. Short for Cocktails & Social, Co.So. features typewritten menus delivered to your table in Manila envelopes, bubble wrap coasters, an all-you-can-eat popcorn machine, and gummy bears to snack on while you sip on your bespoke cocktails. Each drink is carefully crafted and served in a unique glass, and this may be the only place where you can sample a carbonara sour: the secret ingredient is guanciale-infused vodka which adds a savory flavor to the citrus classic.