Raisin

One of humanity’s oldest preserved foods

Drying grapes into raisins is one of the most ancient food preservation methods — predating refrigeration, freezing, and even canning by thousands of years. Archaeological evidence shows raisin production in the Mediterranean and Middle East going back at least 4,000 years.

Egyptian tombs contained raisins as offerings; ancient Greeks awarded them as Olympic prizes; Roman armies carried raisins as portable nutrition during campaigns.

Sun-dried, mechanically dried, or “golden”

Modern raisin production uses three main techniques:

• Sun-dried — traditional, takes 2-3 weeks, produces dark wrinkled raisins. The dominant Californian and Mediterranean method.
• Mechanically dried — faster, more controlled, used in Australian and South African production.
• Golden raisins — sulfur-treated to preserve the original grape color, then mechanically dried. Lighter color, slightly tangier flavor.

The flavor differences are subtle but real — sun-dried raisins develop more complex caramelized notes; golden raisins retain more of the original grape character.

Thompson Seedless dominates

About 95% of California raisins come from a single grape variety: Thompson Seedless — a green grape that was developed in California in the 1870s by William Thompson.

The variety is essentially perfect for raisin production: seedless, high in sugar, thin-skinned, productive, and drying without significant flavor loss. Its dominance means most American raisins taste similar regardless of brand.

Persian and Middle Eastern centrality

In Persian, Turkish, and Levantine cuisines, raisins are a fundamental savory ingredient — used in pilafs, stuffings, meat stews, and sweet-savory pastries. The combination of raisins with rice and meat is so central to these cuisines that some recipes don’t list raisins because they’re assumed.

Persian jeweled rice (morasa polo) features raisins prominently as part of a colorful blend of dried fruits, nuts, and spices over saffron rice.