McDonald’s is adding some spice to its line-up, with the release of a new flavor called “Signature Sriracha” for its sandwiches menu.

In a press release this week, the fast food chain said the sauce will be a “Sriracha Big Mac Sauce,” a combination of Sriracha and the traditional Big Mac sauce. It also said the new sauce option “fulfills customers’ desire for bold and spicy tastes.”

Signature Sriracha is currently in the testing phase, currently available in San Diego and Los Angeles locations, and it will be available in Seattle July 7.