Shake Shack is sprinkling some festive flavor into an otherwise expensive holiday period for the average US family. According to Investopedia, holiday retail sales this November and December are forecasted to grow approximately 3.5% year on year, potentially surpassing a new record of up to $989 billion, a sharp increase from the last year's record of $955.6 billion. Seeking ways to preserve your holiday budget? Shake Shack's timely holiday burger offer might just be the solution.

Shake Shack recently declared a "Holiday Burger Blitz" – an enticing scheme crammed with burger-focused free offerings intended to gift burger enthusiasts during this festive time. This feast for foodies kicks off on Monday, December 16, running up to Tuesday, December 24. To partake, consumers need to make an at least $10 purchase at any Shake Shack outlet or through its application, using the promotional code "BURGERBLITZ."

Each day introduces a new tempting treat. Shanghai Burger is the inaugural attraction on December 16, followed by a free SmokeShack burger the next day. Then, a complimentary Avocado Bacon Burger is the star on December 18, and a traditional Cheeseburger offered on Thursday, December 19. Friday presages a luxurious Black Truffle Burger giveaway, and the lineup concludes with a fresh Avocado Bacon Burger, and a free SmokeShack and ShackBurger on the final two days.

In a bid to maintain the festive thrill, Shake Shack is suggesting pairing your free burger with one of their epic holiday shakes. They offer a classic Christmas Cookie Shake, a decadent Chocolate Yule Log Shake, and an Apple Cider Donut Shake for a surprising twist. However, these aren't part of the deal and will need to be purchased separately.

For those who'd love to amplify their holiday spirit with the Shake Shack charm, the fast-food chain has also curated some festive merchandise. They teamed up with Craftspring, a woman-led, New York-based ornament and gift specialist. Their exquisite holiday ornament collection includes a mini burger resting on a Shake Shack napkin, a Christmas Cookie Shake, a Lady Liberty, and a Madison Square Park ornament which, as the company revealed to Food & Wine, is “perfect for New Yorkers and all our fans from day one.” Slip into the festive spirit and enjoy these tasty treats from Shake Shack this holiday season.