This is an old family favorite at Christmastime. We first made it from the 1980 Pillsbury Holiday cookbook, which has been long lost, I think.
This is an old family favorite at Christmastime. We first made it from the 1980 Pillsbury Holiday cookbook, which has been long lost, I think.
Temperature control at the 290 degree Fahrenheit mark separates smooth, brittle toffee from a scorched, bitter block of separated fats. When boiling granulated sugar alongside unsalted butter, water, and corn syrup, the added glucose molecules disrupt sucrose crystallization, preventing graininess while the butterfat emulsifies completely into the boiling syrup. Rubbing the interior of a heavy-bottomed two-quart saucepan with cold butter before melting prevents local hot spots and scorching along the pan walls. Spreading precisely one-half cup of blanched slivered almonds across a foil-lined nine-by-thirteen-inch pan creates an immediate thermal contact base that lightly toasts the nuts from the residual heat of the poured candy. Waiting until residual heat softens the six ounces of semi-sweet chocolate chips allows for an even spread without seizing the cocoa butter through excessive agitation. Chilling the entire assembly in the refrigerator for one to two hours solidifies the lipid matrix before manual cracking yields irregular, bite-sized shards. Stored in an airtight container at room temperature, this confection maintains its brittle snap for up to two weeks, though textural softening may occur if humidity levels exceed fifty percent.