A deal so hot, it burns out 8/5! Get Free Med. Fries and soft drink with any new #SignatureCrafted Recipe. pic.twitter.com/yT6NaQIZ1L

— McDonald's (@McDonalds) August 3, 2017

Want to score a free medium fries and medium drink at McDonald’s?

It’s surprisingly easy.

Simply buy any Signature Crafted sandwich.

The deal — which is only good through Saturday (August 5) at participating locations — is to help promote the new Signature Sriratcha option, which replaces the Maple Bacon Dijon one.

The new version features a creamy Sriracha Mac Sauce, crispy onions, baby spinach & kale, a tomato slice, and white cheddar cheese.

The Sriracha Mac Sauce is also available as a dipping sauce for a limited time.