How do cashews

On top of this, machines are expensive and require a constant stream of nuts to be cost-effective. With these odds stacked against factory owners, manual processing is typically favoured. Today, Vietnam reigns as cashew king, far surpassing India in cashew nut exports. High-tech machines, developed in Vietnam, have increased production rates and decreased labour force.

For example, a modern plant with just 30 employees can process over kilos of the nuts per day. This allows Vietnam to spend less on wages and pass on this saving to consumers, giving Vietnam a bigger piece of the global market pie. While a movement to machines might seem like the obvious solution, switching to mechanisation requires huge investment and state support, which in India is lacking. Political leaders have also discouraged mechanisation because of the amount of work local communities would lose.

To protect employees, local laws have prevented factories from laying off workers, cancelling out any cost savings machines would provide. At the end of this stalk grows the kidney-shaped cashew nut that many know and love. Cashew nuts are protected from hungry passerby by a double shell containing a potent poison called anacardic acid.

This oily substance— closely related to urshiol, the toxic compound found in poison ivy , poison oak and poison sumac— acts as an irritant, causing an allergic rash on the skin. Its corrosive coating is the reason that cashew nuts are not sold in their shells like pistachios or peanuts. Instead, cashews are typically dried and roasted, a process that rids the nut of toxic oils and leaves its shell brittle and easy to remove.

However, cashews that have not been dried and roasted can be purchased in some stores and online. But as Deborah Enos, a certified nutritionist and health coach explains in her column for Live Science , people should use caution when purchasing any cashews labeled as "raw. You may be at increased risk for a cashew allergy if you're allergic to another tree nut.

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