Chocolate Raspberry Sauce

From the Food Network

Chocolate Raspberry Sauce
Recipe courtesy of Gourmet Magazine
1 cup heavy cream
5 tablespoons raspberry jam
4 1/2 ounces fine-quality bittersweet chocolate (not unsweetened), chopped fine
1 ounce unsweetened chocolate, chopped fine
1 to 2 tablespoons cassis, or to taste
In a heavy saucepan bring the cream to a simmer with the jam, whisking, remove the pan from the heat, and add the chocolates and a pinch of salt. Let the mixture stand for 3 minutes, whisk it until it is smooth, and whisk in the cassis. Strain the sauce through a fine sieve set over a bowl and serve it warm over ice cream. This sauce hardens into a chewy candy when poured over ice cream.