Worcester, England (AHN) -- Historians believe they may have found the original recipe for the famous condiment, Lea and Perrins' Worcestershire sauce. The recipe if thought to be 150 years old.

A former accountant for the company claimed he found notes from the mid 1800s detailing the closely guarded recipe.

Bonnie Clifford told The Daily Telegraph that her dad, accountant Brian Keogh, who passed away 3 years ago, told her he found the recipe in two separate leather-bound folios.

Analysts believe the recipe was written in two different handwriting styles because no one person knew the entire recipe, which is thought to contain cloves, vinegar, pickles and tamoraide, the Telegraph reported.

Clifford is now working with the Worcester City Museum to authenticate the Worcestershire sauce recipe her father found.

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