Taco Bell on Thursday posted a picture of Cool Ranch Doritos with the caption "Anything could happen in 2013."
The ranch flavored shell was tested out in Toledo last year but hasn't been offered nationally.
The new flavor comes on the crunch of the fast food chain's original Doritos Locos taco, which is nacho cheese flavored.
The Doritos Locos Tacos sold so well the product has become the best-selling fast food item and sold 100 million within 10 weeks.
The product debuted March 8, 2012, and was promoted to be a sort of revamped taco with a shell made from Doritos cheese nacho.
It costs $1.29 and it contains seasoned beef, tomatoes and lettuce, all in a Doritos shell.
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