White Chocolate Mint Terrine with Dark Chocolate Sauce

Preparation

1. Step 1

   For terrine: Line 9x5x2 1/2-inch loaf pan with plastic wrap, allowing plastic to overhang edges by 3 inches. Place in freezer. Whisk first 3 ingredients in large metal bowl. Set bowl over saucepan of simmering water (do not allow bottom of bowl to touch water); whisk constantly until candy thermometer registers 160°F, about 4 minutes. Remove bowl from over water. Add white chocolate; whisk until melted and smooth. Mix in peppermint extract. Whisk until cool and thick, about 3 minutes.

   Step 2

   Using electric mixer, beat cream in another large bowl until stiff peaks form. Fold cream into white chocolate mixture. Spoon mixture into prepared pan; smooth top. Cover and freeze overnight.

2. Step 3

   For sauce: Combine first 3 ingredients in heavy medium saucepan. Stir over medium heat until butter melts. Add both chocolates and whisk until smooth. Mix in 3 tablespoons water. Remove from heat; cool slightly. (Terrine and sauce can be made 1 week ahead. Keep terrine frozen. Cover and refrigerate sauce. Before serving, stir sauce over low heat just until warm.)

   Step 4

   Turn frozen terrine out onto platter. Peel off plastic. Cut terrine into 3/4-inch-thick slices. Place 1 slice on each plate. Drizzle sauce over. Garnish with mint.