You probably don’t think much about yourfast-food order.

So, of course, it comes with a lot of trade secrets.

And for more, check out these6 Secrets Chipotle Doesn’t Want You to Know.

fast food drive-thru

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It’s quite a sight to see.

But the fast-food joint that’s most likely to screw up your order?

It’s Wendy’s, which had a 79% order accuracy rate.

burger king impossible whopper

Kaley Roberts/ Eat This, Not That!

The most order errors happen during the dinner rush, according to theQSRmagazine’s study.

But, to be fair, that’s because the chain is popular and has perpetually crowded drive-thru lanes.

Most fast-food joints have secret menus

Nachos at Chipotle.

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A patty melt at Five Guys.

A coffee blizzard at Dairy Queen.

Here are30 fast-food secret menu items.

taco bell veggie mode kiosk

Courtesy of Taco Bell

(Have you heard of the “Skittles” smoothie at Jamba Juice?)

The soft-serve machines take up to four hours to clean, a task that needs to be done daily.

It all comes down to a dairy technicality.

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DQ’s soft-serve has just 5% milkfat content.

This isn’t something Dairy Queen is hiding.

Some malls, though, have “aroma restrictions” in place that limits where Cinnabon can set up.

Wendys drive thru

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But Chick-Fil-A isn’t spilling on the exact ratio it uses to make its signature sauce.

BTW,Chipotle is on to you.

So go ahead, ask for that lettuce, tomato, and mayo.

drive thru sign

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If you’re so bold, see if they’ll switch out your bun for a premium one."

KFC’s secret recipe is not a secret anymore.

KFC has kept its mix of 11 herbs and spices closely guarded.

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But aChicago Tribunereporterwas shown a handwritten list of 11 herbs and spicesfrom a Sanders family scrapbook.

Biofilms can establish themselves, protecting the build-up of bacteria,Food SafetyMagazine explains.

It’s because the batter is prepared in vats that carry vanilla,according to The Daily Meal.

Animal burger with similar toppings as animal fries at In-n-Out

Kaley Roberts/Eat This, Not That!

The Illinois-based companyalso supplies plant-based meat to Burger King.

Do any of these fast food secrets surprise you?

Might make you wonder what else happens in the kitchen while you’re waiting in the drive-thru.

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dairy queen summer blizzard

Courtesy of Dairy Queen

woman eating french fries

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cinnabon classic roll

Photo: Courtesy of Cinnabon

chick fil a sauces

Chick Fil A / Facebook

mcdonalds quarter pounder deluxe burger no ketchup

Photo: Ann Marie Langrehr / Eat This, Not That!

fast food assortment and soda

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chipotle workers assembling burritos

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fast food drive thru

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taco bell taco

Taco Bell/ Facebook

kfc meal on tray in restaurant

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handmade onion rings from sonic to go

Amy S./ Yelp

press on burgers

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mcdonalds burger king

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