Article Spotlight: Mezcal worm in a bottle: DNA evidence suggests a single moth species

by | Nov 7, 2023 | Article Spotlight

"Scientists Have ID’d the Worm in Your Mescal"

Mezcals are distilled Mexican alcoholic beverages consumed by many people across the globe. One of the most popular mezcals is tequila, but there are other forms of mezcal whose production has been part of Mexican culture since the 17th century. It was not until the 1940–50s when the mezcal worm, also known as the “tequila worm”, was placed inside bottles of non-tequila mezcal before distribution. These bottled larvae increased public attention for mezcal, especially in Asia, Europe, and the United States.

 

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In the Press

Scientists Have ID’d the Worm in Your Mescal

SCIENTIFIC AMERICAN

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Iconic 'tequila worm' in mezcal bottle is not really a worm – here's what it is

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‘Tequila worms’ in mezcal bottles are actually moth larvae, researchers say

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Famous ‘tequila worm’ found at bottom of bottle isn’t really a worm. So what is it?

Miami Herald

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“It was not expected, because there has been some debate in the literature as to the specific species of ‘worm’ that is in the bottles, other than that it is of an insect,” Kawahara explained. “It was not a butterfly or a beetle, as some have thought.”
Dr Akito Y Kawahara

Lead Author, University of Florida

For All Readers - AI Explainer

 

What is mezcal, and how does it differ from tequila?

Mezcal is a traditional Mexican distilled alcoholic beverage made from various species of the Agave plant. Tequila, on the other hand, is a specific type of mezcal made from blue agave. The key difference lies in the specific agave species used for production.

 

How is mezcal produced, and what gives it its distinctive flavor?

Mezcal production involves boiling the hearts of the agave plants in underground pit ovens, resulting in its intense and smoky flavor. After boiling, the cooked agave hearts are mashed, fermented, and distilled. The final product can be aged in barrels for varying durations, from one month to several years.

 

Why is there concern about the future of traditional mezcal production?

Traditional mezcal production is facing challenges due to a shortage of raw materials and rising prices caused by increasing demand for tequila. This economic difficulty is discouraging local distillers and putting the rich tradition at risk.

What is the history behind the “mezcal worm”?

The practice of placing a “mezcal worm” inside the bottle is a relatively recent marketing strategy, dating back to the 1940s and 1950s. Jacobo Lozano Paez, a Mexican entrepreneur, is believed to be the first to do this to enhance the drink’s flavor and appearance.

Are all mezcal brands including a “mezcal worm”?

No, not all mezcal brands include a “mezcal worm.” In fact, there are many producers who refrain from adding larvae or other ingredients to their mezcal. Some argue that such inclusions may lower the quality of the final product.

What is the significance of the study involving the identification of larvae in mezcal bottles?

This study aimed to identify and understand the larvae commonly found in mezcal bottles. By using both morphological and DNA analysis, the researchers confirmed that the larvae in question belong to the species Comadia redtenbacheri, shedding light on their presence in the beverage.

How might the findings of this study impact the mezcal industry?

The identification of these larvae provides valuable insight into the authenticity of mezcal products. It may help consumers make informed choices about the mezcal they purchase, particularly if they prefer products without the inclusion of larvae.

 

 

Mezcal worm in a bottle: DNA evidence suggests a single moth species

Mezcals are distilled Mexican alcoholic beverages consumed by many people across the globe. One of the most popular mezcals is tequila, but there are other forms of mezcal whose production has been part of Mexican culture since the 17th century. It was not until the 1940–50s when the mezcal worm, also known as the “tequila worm”, was placed inside bottles of non-tequila mezcal before distribution. These bottled larvae increased public attention for mezcal, especially in Asia, Europe, and the United States. Despite these larvae gaining global interest, their identity has largely remained uncertain other than that they are larvae of one of three distantly related holometabolous insects. We sequenced the COI gene from larvae in different kinds of commercially available mezcals. All larval DNA that amplified was identified as the agave redworm moth, Comadia redtenbacheri. Those that did not amplify were also confirmed morphologically to be the larva of this species.

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