"Also reminiscent of frozen mousse is this decadently rich chocolate ice cream. The addition of grated chocolate provides extra bursts of flavor, but you may omit it if you prefer smoother, unbroken texture. For a triple chocolate treat, leave in the extra chocolate and splash each serving with creme de cacao." Stir together sugar and cocoa. Beat in egg yolks. Gradually beat in cream. Chill and stir freeze. Grate and stir in semi-sweet chocolate. Makes: 1 litre