Combine milk, cream, and yolks in top of double boiler.
Beat with rotary beater until well blended.
Add sugar, salt, and chocolate that has been grated or cut in pieces.
Place over boiling water and cook until chocolate is melted and the mixture is thickened (about 7 minutes).
Add candy and stir well.
If the crunchy consistency of candy is desired, add candy to cold sauce just before serving.
Serve over New York or vanilla ice cream.
Makes 3/4 cup.