The new option also eschews iceberg and leaf lettuce in favor of baby kale and baby spinach to help balance out the new spicy sauce. Also included in the Signature Sriracha flavor are white cheddar cheese, crispy onions, and tomato. Beyond that you can choose from various meat and bun options.
The new Signature Crafted sandwich option and accompanying sauce can be found at participating locations in San Diego and Los Angeles for a limited time. Come July 7, 2016, it'll arrive in Seattle.
Photo via McDonald's.