Chipotle Mexican Grill has added Cilantro-Lime Cauliflower Rice to its menu for a limited time as it seeks to appeal to consumers looking to reduce their consumption of grains. The new dish costs $2 more than its standard white rice alternative. Customers ordering the new item will receive free delivery on orders through the Chipotle app or its third-party delivery partners. Digital sales represented 48.8 percent of the chain’s total in its most recent quarter.