-
Butter an 8-inch square glass-baking dish.
-
Heat sugar, corn syrup, water and salt over low heat in a heavy 2-quart saucepan until sugar is dissolved, stirring occasionally.
-
Increase heat to high and bring to a boil.
-
Boil, without stirring, until syrup reaches 265° (hard-ball stage) on a candy thermometer.
-
Just before syrup reaches 265°, beat egg whites in a medium bowl of an electric mixer on high speed just until stiff peaks form.
-
In a very slow steady stream, beat syrup into whites.
-
Beat in vanilla.
-
Continue beating about 6 minutes, or until mixture loses it's gloss.
-
Fold in nuts with a rubber spatula.
-
Pour candy into baking dish and spread evenly with a rubber spatula.
-
Let cool to room temperature.
-
Cut candy into 1-inch squares.
-
(The divinity can be made up to 1 week ahead and stored in an airtight container at room temperature.).