Uva Passa

Raisins are the dried form of grapes, a culinary practice dating back to antiquity. Historical evidence suggests they were a staple in ancient Egypt and the Mediterranean basin, where they were highly valued for their long shelf life and concentrated sweetness.

The primary ingredient in any raisin is the grape, with the Thompson Seedless variety being one of the most common due to its lack of seeds. The transformation from fruit to raisin occurs through dehydration, traditionally achieved via solar evaporation. In modern commercial production, sulfur dioxide is sometimes used to prevent browning and preserve the fruit's color.

A superior raisin is distinguished by its plumpness and a texture that remains succulent rather than overly leathery or tough. The flavor should be a concentrated expression of the grape's natural sugars, offering a deep, sweet profile without any gritty residue.

Regional variations are largely defined by the drying method and grape variety used. "Golden raisins" are typically treated with sulfur to maintain a bright, pale appearance, making them popular in baking and salads. In contrast, "dark raisins" are often dried naturally, resulting in a deeper color and a more robust, complex flavor profile. Mediterranean-style raisins often lean toward a more nuanced sweetness, whereas California-produced varieties are widely recognized for their consistent sweetness and high sugar content.