Every chocolate type demands its own three-stage temperature curve, and the reason is chemistry: the proportion of cocoa butter, cocoa solids, and milk fat in the bar determines how its cocoa butter crystallizes. Dark chocolate is tempered warmest—melted to 45–50°C, cooled to 27°C, then worked at 31–32°C—while milk, white, and ruby chocolates, softened by milk fat, must be worked two to three degrees cooler. Follow the right curve for your ingredient and the reward is the same: a glossy surface, a clean snap, and a confection that resists streaks and bloom.
Introduction: The Science of a Perfect Snap
Tempering is the controlled heating and cooling of melted chocolate so that its fat sets in a stable crystal form rather than a disorderly one. As Ghirardelli's confectionery experts put it, proper tempering "gives chocolate a smooth and glossy finish, keeps it from easily melting on your fingers, and allows it to set up beautifully." The chocolate maker Valrhona adds that good tempering keeps chocolate shiny, eases release from molds, and produces that clean snap pastry cooks prize. The catch is that one universal curve does not exist: dark, milk, white, and ruby chocolates differ in fat and solids composition, so each requires different temperatures at the melt, cool, and working stages. Precision matters, and a candy thermometer—avoiding anything above about 130°F, where chocolate scorches or seizes—is the essential tool.
