pumpkin walnut fudge

4 cups Sugar
1 cup Milk
3 tbls Light corn syrup
1 cup Fresh pumpkin pur?e or canned pumpkin pur?e
3 tbls Unsalted butter, cut into bits
1 tsp Vanilla
2 cups Chopped walnuts

In a 4-quart heavy saucepan combine the sugar, the milk, the corn syrup,
the pumpkin pur?e, and a pinch of salt, cook the mixture over moderate
heat, stirring, until the sugar is dissolved, and cook it, undisturbed,
until a candy thermometer registers 238?F.

Remove the pan from the heat, add the butter (do not stir it into the
mixture), and let the mixture cool until it is 140?F. Stir in the
vanilla and the walnuts, beat the mixture with a wooden spoon for 30

seconds to 1 minute, or until it begins to lose its gloss, and pour it
immediately into a buttered 9-inch-square pan. Let the fudge cool until
it begins to harden, cut it into squares, and let it cool completely.
The fudge keeps, stored between sheets of wax paper in an airtight
container, in a cool place for 2 weeks.

Makes about 2 pounds.