- In large bowl, stir together sugar and cocoa. Add egg yolks and blend with electric mixer. Add cream a little at a time, beating well after each addition. Chill mixture in refrigerator.
- While cream mixture is chilling, grate chocolate chips in blender or food processor or using a rotary grater, until fine. Stir into cream mixture. Freeze in canister of ice cream maker according to manufacturer's instructions.