Christina Cheddar Berk is assistant managing editor of Enterprise coverage at CNBC Digital.
Courtney Reagan is CNBC's Retail Reporter.
Tom is a Senior Editor and Assignment Desk Manager for CNBC TV. He also writes about the business of beer for CNBC.com.
Stephanie Landsman is one of the producers of "Fast Money."
San Francisco Bureau Chief at CNBC
Amazon is testing a service for Prime members that provides free pickup of grocery items in as quickly as 15 minutes.
Chipotle said it's ditched all artificial flavors, colors and preservatives from its menu and is free of all additives.
The stock gain comes a day after Darden posted its earnings and said it plans to buy Cheddar's Scratch Kitchen.