The Big Shack Is Bringing Big Burger Energy

There are burgers. There are big burgers. And then there’s The Big Shack. 

In preparation for National Burger Day on 27th August 2026, we’re bringing some seriously big burger energy to the Shake Shack menu for a limited time only.

Consider this your official invitation to go big, and make your next burger break a little more exciting.

So…what exactly is The Big Shack?

Glad you asked.

The Big Shack is for those days when one cheeseburger simply isn’t enough.

Our big burger brings together two 100% Aberdeen Angus cheeseburgers, and stacks them with crisp lettuce, pickles, onions, tomatoes and our signature ShackSauce™. 

We’ve then tucked the whole situation into a three-layer toasted potato bun. Two layers just wasn’t enough you see.

It’s everything you love about Shake Shack, just… more of it.

More burger. More cheese. More toppings. Potentially more respect from your mates.

And because every Big Shack is cooked fresh to order, you can expect that same Shack-quality in every gloriously big bite.

Wait… there’s more!

Oh, you thought we were done?

Absolutely not.

If you pick up a Big Shack in-Shack, you’ll also get a scratch card for the chance to win some very tasty prizes.

We’re talking burgers, fries, shakes and other surprises – including the chance to win a meal for four at Shake Shack UK.

So yes, there is a possibility that your Big Shack could come with a side of “OMG I WON.”

We like those odds.

Big Shack. Big refresh.

If you’re ordering your Big Shack for delivery between 24th–31st August, we’ve got something for you too.

Order a Big Shack on Deliveroo, Just Eat or Uber Eats and get a FREE regular Shack-made Lemonade or Fifty/Fifty.

Because if your burger is bringing big energy, your drink probably should too.

Get it while it’s here

The Big Shack is available across all our locations but it’s only sticking around from 17th–31st August, while stocks last.

So if you’ve been waiting for a sign to order a big burger, this is it.

Big Shack. Big burger energy.  Very limited time.

You know what to do!

Terms & Conditions: Scratch cards: Available with Big Shack purchases made in-Shack only, from 17th August 2026, while stocks last. One scratch card per qualifying Big Shack purchase. Prizes are subject to availability and additional terms may apply. Free Lemonade or Fifty/Fifty offer: Available 24th–31st August 2026 on orders including a Big Shack placed via Deliveroo, Just Eat or Uber Eats. One free regular Shack-made Lemonade or Fifty/Fifty per qualifying order. Subject to availability. Delivery platform terms and conditions may apply.