How to Measure and Recognize Saffron Quality

How to Measure and Recognize Saffron Quality

The differences in the taste profiles of real and fake saffron are pronounced. Fake saffronwhich is often colored with red food coloring or other foreign substances will either lack flavor entirely or have a bitter metallic taste. On the other hand, real saffron will have a strong floral scent and the will have a floral and earthy taste, the kind of flavor you’re looking for saffron to impart.

Saffron is the harvested stigma of the autumn crocus flower, also known as the saffron crocus. Each flower produces only three stigma at a time, meaning it takes between 50,000 and 75,000 flowers to produce just 1 pound of saffron spice. To put it another way, that pinch of saffron you’re throwing in your paella? Those twenty-ish stigma have come from seven different flowers.

Rumi Spice sources directly from farmers and offers full transparency of supply chain

Once the stigma has been harvested, the actual flower is used in a number of ways. Saffron has been used for hundreds of years to treat extensive number of ailments, including asthma, cough, heartburn, insomnia, depression, Alzheimer’s disease, dry skin, and cardio-vascular ailments. In some areas of the world, people apply saffron directly to the scalp as a cure for baldness. Beyond its health benefits, saffron extracts are used for fragrance in perfumes, as a dye for cloth, and of course, as a flavoring for food.

The sargol and negin are the highest quality parts of the saffron stigma (and, naturally, the parts sold here at Rumi Spice). These parts are the best portions due to the fact they they contain all of the stigma’s stores of picrocin and safranal, the organic chemical compounds that make saffron such a unique ingredient. Picrocin is the compound that gives saffron its bitter taste. Safranal is compound responsible for saffron’s floral aroma.

parts of a saffron stigma


When real, high-quality saffron is harvested, the sargol and negin are harvested by carefully removing the style of each thread, in order to ensure only the most potent and delicious parts of the saffron make it to the consumer.  This is done prior to drying the saffron such as to ensure that the finished product has its distinct deep red color. It is paramount to remove the style prior to drying because, as many of those that have used saffron before know, the final saffron thread is frail and delicate, and removing the yellow style after drying would be difficult.

women processing saffron maintaining the best quality saffron standards

Traditionally saffron was harvested by hand in farmers homes. This makes it difficult to ensure consistent quality. We at Rumi process all our saffron in centralized processing facilities. An added benefit is that we're able to provide seasonal employment for over 300 Afghan women. In fact Rumi is the largest private sector employer of women in Afghanistan.

It’s important to know that some yellow should be present in the dried stigmas. If the saffron is completely red, that’s usually a good indicator that the supplier dyed the batch to cover up impurities or low quality. Additionally, avoid saffron that looks frayed, worn or has a plenty of pale streaksthese are also an indicator of poor quality. The best saffron should be a deep red with orange/yellow tips.

How is Saffron Quality Tested?

safranal, crocin, and picrocin levels in rumi saffronmoisture content and volatile matter test for rumi spice saffron


The International Organization for Standardization (“ISO”) is an independent global network of the over 160 of the world’s foremost standards bodies who are the developers and publishers of standards for everything from sterilization of medical devices to instant coffee standards. These standards are set when experts from all over the world come together to develop international standards and help ensure interoperability, such as with telecommunication standards like 4G, or a uniform method of judging the rank between similar products, such as saffron.

ISO Standard 3632 is the standard that pertains solely to the measurement of saffron quality. The standard consists of 2 parts, ISO 3632-1 and ISO 3632-2, which specify the test methods for the different classifications of dried saffron, including threads, cut threads, and powder. These standards’ main purpose is to test the strength of the saffron’s flavor, scent, and color; this helps protect consumers from fake saffron which is expensive but offers limited culinary value. Additionally, the standard also tests the drying method of the saffron; poorly dried saffron will retain moisture and as such, weigh more offering an additional aspect of deception to the end consumer.

At Rumi Spice, we rigorously test our saffron under ISO 3632. Our saffron exceeds Category I, or "Best Quality" standards in every attribute. This translates directly to taste and is why top culinary destinations like Restaurant Daniel, The French Laundry, and enlightened foodies across the US trust Rumi when it comes to saffron.

Haji Rahimi explains the importance of maintaining quality during processing.

How Can I Measure Saffron Quality?

Once you’ve purchased saffron, there is a simple experiment you can perform to test your saffron’s quality: Take a few saffron threads and soak them in hot (not boiling) water for 5 to 20 minutes.

Fake saffron will quickly bleed out its artificial red dye and the threads will disintegrate. Real saffron will remain intact in the warm water and will emit an even and uniform yellow color throughout the water.

You can also test the differences in the taste profiles. The test water of the fake saffron will either lack flavor entirely or have a bitter metallic taste. Real saffron will have a strong floral scent and the test liquid will have a floral and earthy taste, the kind of flavor you’re looking for saffron to give.

In fact, the test water can be used directly in your cooking to add the complex and nuanced flavor of saffron to your recipe. This is one of the most common methods of cooking with saffron.

Taste Matters! 

At the end of the day, taste is what matters. We perform this same water test for every restaurant we visit. The difference is clear to the eye but unmistakable to the taste buds. One of our favorites, Michelin two-star restaurant, The Inn at Little Washington (pictured below), were quick to switch to Rumi Saffron after conducting a taste test.

Inn at Little Washington, 2 Star Michelin Restaurant, chooses Rumi Saffron

Saffron is the most expensive spice in the world. When you're spending money on saffron, its important to spend it on the best quality. We go to great lengths to ensure our Afghan saffron is the best tasting and consistently high quality. We can tell you the farm and the farmer that produced every strand of saffron. Do you know where your saffron comes from?

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