How to Identify Adulterated Saffron
Six checks a buyer can do on the sample, before anything reaches a laboratory.
Saffron is among the most adulterated products in the spice trade, because the economics invite it. None of these checks replaces a laboratory report, but together they tell you whether a sample deserves one.
1. The water test
Steep a few threads in cool water. Real saffron releases its colour slowly, over several minutes, and the threads keep their red colour. Dyed material bleeds instantly and the threads turn pale.
2. The rub test
Rub a thread between wet fingers. Saffron gives a yellow-orange stain. A bright red stain suggests added colour.
3. Shape under magnification
A genuine stigma flares into a trumpet at one end with a fine slit. Safflower and dyed corn silk are flat, even strands with no trumpet.
4. Smell
Hay, honey and a faint metallic note. A sweet or perfumed smell usually means something was added.
5. Taste
Saffron is bitter, never sweet. Sweetness points to a honey or sugar treatment used to add weight.
6. Weight and brittleness
Correctly dried saffron is light and snaps cleanly. Threads that feel heavy or bend limply are usually carrying moisture — which you would be paying for by the gram.
Then the report
After the sample passes, the laboratory settles it: crocin, picrocrocin, safranal, moisture, foreign matter and a screen for artificial colour.
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