Hollis Johnson/Business Insider/Chick-fil-A

Chick-fil-A is known for its classic chicken sandwich.

However, there's more to the iconic chain's menu than meets the eye.

While some classics populate every Chick-fil-A menu across America, the chicken chain has a handful of regional items that are far more difficult to find.

From cheese sauce to guacamole, here are some of the lesser-known gems from Chick-fil-A menus across the US.

Cheese sauce

Hollis Johnson/Business Insider

Roughly 436 locations in the Northeast and Midwest serve a special cheese sauce that can't be found at most Southern locations.

Guacamole

In Southern California, a number of Chick-fil-A locations serve guacamole.

Mac and cheese

Business Insider/Hayley Peterson

Chick-fil-A first started testing mac and cheese in July 2017. The dish is available in certain locations in Texas, Maryland, Tennessee, and Georgia, the Daily Meal reported in 2018.

The fast-food chain experimented with a number of different mac and cheese recipes - including one that featured cauliflower - before settling on this one, Business Insider's Hayley Peterson reported.

Chicken gravy

As of August 2018, nine Chick-fil-A locations in Iowa, Arizona, and Arkansas serve chicken gravy.

Spicy Chicken Strip Biscuit

Chick-fil-A

Mac and cheese isn't the only regional Chick-fil-A test. In January, the chain began testing the Spicy Chicken Strip Biscuit in Yuma, Phoenix, and Tucson, Arizona.

Jalapeño peppers

Some locations in Texas and New Mexico have jalapeño peppers on the menu.

Brownies