California Walnut Candy (Penoche)

Brown sugar's molasses content adds both flavor complexity and hygroscopic properties that keep this candy slightly softer than white sugar fudge. Boiling to the firm-ball stage (244-248°F) creates the ideal sugar crystal structure—hot enough to set firmly but not so hot it becomes brittle. Beating the mixture as it cools creates tiny sugar crystals that give penoche its characteristic smooth, creamy texture rather than a grainy consistency. The butter adds fat that coats sugar crystals and contributes to a tender, melt-in-your-mouth quality.