Is there a reason why circus peanuts taste like banana?

Numerous traditional dishes prominently feature peanuts or are entirely centered around them. While they likely appeared after circus peanuts, peanut brittle also originated in the 1800s and continues to be a significant element of pop culture today. In the following century, the peanut butter and jelly sandwich secured its place in American culinary history. Time and again, peanuts have proven to be a crowd favorite. Thus, the peculiar banana flavor of circus peanuts certainly doesn't stem from a lack of appreciation for this versatile ingredient. Unfortunately, these theories fall short of providing a definitive explanation.
In 1999, John Flanyak, Brach's director of research, shared with The Wall Street Journal a theory suggesting that banana flavoring was simply more cost-effective than peanut flavoring when circus peanuts were first created. Additionally, in his book "Andrew Zimmern's Field Guide to Exceptionally Weird, Wild, & Wonderful Foods," celebrity chef Andrew Zimmern speculated that the unusual flavor could have arisen from a mistake involving banana oil. While both theories are plausible, they do not bring us any closer to uncovering the true story behind this candy.
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