These Onions Won’t Make Anyone Cry: Science Breakthrough to End Tears in Your Kitchen

Onions are a staple ingredient in cuisines around the world, valued for their distinctive flavor and their ability to elevate dishes. Yet, preparing them is often a tearful affair due to an irritant chemical released when chopping. To address this nuisance, researchers have developed a new onion variety, the “sunion,” which promises to solve the problem. This innovation could potentially revolutionize the way we cook, offering an alternative to traditional onions while preserving their nutritional benefits.

Onions vs. Sunions

Traditional onions, though tasty, carry a well-known reputation for making those who cut them cry. This reaction stems from the release of an enzyme called alliinase when an onion is cut. This enzyme interacts with sulfur-containing compounds, producing a gas, propanthial-S-oxide, that irritates our eyes. To avert tears, various tricks exist, such as freezing the onion or wearing protective eyewear.

Sunions, an innovation developed by the German agrochemical company Bayer, offer a solution to this problem. Resulting from research work started in the 1980s, this variety was commercialized in the United States in 2018. The first Sunion fields were located in the states of Nevada and Washington, covering an area of 800 km² with a yield of 22.5 tonnes per km². Today, although their price is roughly three times that of ordinary onions, Sunions are beginning to gain a foothold in the French market.

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Tear-Free Guarantee

Sunions were developed through natural crossings without GMOs, aiming to reduce the production of propanthial-S-oxide. Another key aspect of the production process is the post-harvest maturation period, which further reduces the onions’ irritating potential. This enables Sunions to be handled without triggering tears, as evidenced by 93% of consumers who report no tingling or tearing when using them.

In addition to being tear-free, Sunions do not lose any of their nutritional virtues. They are rich in antioxidants and vitamins A, B, and E, contributing to strengthen the immune system, slow cellular aging, and improve blood circulation thanks to their anti-inflammatory and antibacterial properties. However, some consumers find that Sunions have a milder taste and aroma, a direct consequence of the absence of sulfoxides.

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Impact on Cooking and Health

The introduction of Sunions into cooking can transform culinary habits. By removing the tear-inducing nuisance, these onions allow both amateur and professional cooks to focus on preparing their dishes without distraction. Furthermore, their nutrient-rich profile may encourage greater incorporation into daily diets, thereby boosting vitamin and antioxidant intake.

In terms of health, the beneficial properties of Sunions should not be overlooked. Their high antioxidant content helps combat free radicals, slowing the aging of cells. Moreover, the vitamins they contain play a crucial role in maintaining the immune system and skin health, while their anti-inflammatory properties help prevent certain cardiovascular diseases.

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Challenges and Prospects

Despite their numerous advantages, Sunions come with certain challenges. Their high cost could hinder widespread adoption, especially in households with tight budgets. Additionally, Sunions’ milder flavor might not satisfy purists who seek the characteristic taste of traditional onions. However, increased production and broader public acceptance could gradually lessen these barriers.

Looking ahead, research on Sunions and other tearless onion varieties could intensify, paving the way for even more advanced innovations. The question remains how these onions will fit into global culinary practices and whether they will manage to replace traditional onions in consumers’ hearts. What will be the long-term impact of this innovation on how we cook and on our health?