The Shake Shack Frozen Custard Deal You Can Only Get With This Coupon

Shake Shack has a sweet deal for anyone who loves frozen custard. The fast-food chain is giving dessert fans a reason to make a little extra room after their next Shack meal and there’s a coupon code that makes the offer even sweeter.

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With National Frozen Custard Day being August 8th, Shake Shack is getting in on the celebration with a limited-time offer that could make the next trip to the chain a lot more tempting.

The $3 Custard Deal Is Here

Shake Shack’s National Ice Cream Day deal gives customers a single frozen Custard for $3 when they make a qualifying purchase. The promotion runs through August 19th, giving frozen dessert fans a couple of days left to grab one.

The promo code is CUSTARDTIME, which is case sensitive. The deal can be used on orders made through the Shake Shack App, shakeshack.com, or an in-Shack kiosk. The code must be entered at checkout to receive the promotional price.

There Is One Tiny Catch

Shake Shack says customers must make a qualifying purchase of at least $1 along with the single Custard. So the dessert itself costs $3 under the deal, rather than costing $0. The qualifying purchase can include a range of menu items, such as burgers, chicken, fries and drinks. Gift cards do not count toward the minimum purchase.

The offer also allows one discounted single Custard per qualifying order. It cannot be combined with other promotions, and the maximum promotional savings is $1.99.

So, no, this isn’t a completely free tub of frozen custard. But $3 is still a pretty nice price for a creamy dessert to finish a Shack meal.

So, What Is Frozen Custard Anyway?

For anyone wondering why Shake Shack is making such a big deal about custard, frozen custard has one key ingredient that sets it apart from regular ice cream: egg yolks.

The egg yolks give frozen custard its rich, smooth and creamy texture. Shake Shack has also made its frozen custard a regular part of the menu. That creamy texture makes it a pretty good combo with a salty order of fries or a ShackBurger.

Some Locations Are Off The Menu

There are a few locations that are excluded from the deal. It doesn’t apply to locations like Upper East Side, Woodbury Commons, Hearld Square, Penn Station, Columbus Circle, Wesley Chapel, Goodyear, Surprise, The Battery, Meyerland, Ross Park Mall Rockwall, Athens, Arcadia, Wilmington, and Aliana.

For the easiest shot at the deal, ordering through the Shack App, the official website, or an in-Shack kiosk is the way to go.

The CUSTARDTIME deal is available through August 19, 2026, so there’s still time to squeeze a $3 custard into a Shake Shack order.