2/3 cup packed dark-brown sugar
3 ounces (6 tablespoons) butter, cut into pieces
1/2 cup light corn syrup
1/4 teaspoon coarse salt
1/2 cup heavy cream
Mix sugar, butter, corn syrup, and salt in a small saucepan over medium heat, and cook, stirring, until sugar dissolves. Bring to a boil, and cook for 2 minutes. Remove from heat, and whisk in cream. Return to heat, and cook for 2 minutes. Let cool slightly.