CHICAGO - Portillo’s is serving up something new — and secret.

The Chicago-style chain announced Tuesday it has launched a hidden menu featuring two over-the-top additions: a triple cheeseburger and chili cheese fries.

What we know:

The burger stacks three beef patties and comes topped with cheese, tomato, lettuce, red onion, pickles and ketchup.

The fries are smothered in Portillo’s signature cheese sauce and a hearty chili with beans.

Company officials said these are the first of several items planned for the secret menu.

How to Order:

There’s a catch to trying the new food items: the secret items are available only to Portillo’s Perks members, and they must be ordered on digital kiosks inside restaurants.

On the kiosks, customers should look for "Pokey" and tap her head to unl

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