Saffron Grading: How to Spot Real Quality

By Maya Gonzalez · October 6, 2026

Understanding Saffron Grades

Saffron (Crocus sativus) is the world's most expensive spice, and quality varies dramatically between producers. The International Organization for Standardization (ISO) classifies saffron into four grades based on crocin (color), picrocrocin (taste), and safranal (aroma) content.

ISO Grading System

Grade I (highest): Crocin reading above 200, picrocrocin above 70, safranal between 20-50. This is premium saffron with intense color, strong flavor, and rich aroma. Grade II: Crocin 170-200. Grade III: Crocin 120-170. Grade IV: Crocin below 120 (lowest quality).

Visual Quality Indicators

Genuine high-grade saffron has deep crimson-red threads with no yellow or white portions (style). The threads should be trumpet-shaped — wider at the top and tapering to a thin base. When rubbed between fingers, real saffron leaves a yellow-orange stain but the threads themselves remain red.

Common Fraud Detection

Dyed corn silk: Threads break easily and leave red dye on fingers
Safflower petals: Wider, shorter threads with no trumpet shape
Coconut fiber: Stiff threads that do not soften in water
Paper strips with dye: Dissolve in water leaving white fiber

The Water Test

Place a few threads in warm water. Real saffron slowly releases a golden-yellow color that spreads outward in a fan pattern over 10-15 minutes. The threads should remain red after soaking. If the water turns red immediately or the threads turn white, the saffron is likely adulterated.

Origin Matters

Iranian saffron (particularly from Khorasan province) consistently scores highest in ISO testing. Spanish saffron (La Mancha DOP) is also premium quality. Kashmiri saffron has exceptional crocin content but limited availability. Always buy from reputable sources with traceable origins.