Bring 2 cups whipping cream and 1 cup milk to boil in heavy large saucepan. Whisk yolks and sugar to blend in medium bowl. Gradually whisk hot cream into yolk mixture. Return to same saucepan. Stir over low heat until custard thickens and leaves path on back of spoon when finger is drawn across, about 5 minutes. Immediately transfer custard to blender. Add mangoes and blend until smooth. Chill custard. Stir in remaining ingredients. Process in ice cream maker according to manufacturers instructions. Freeze ice cream in covered container. (Can be prepared 2 days ahead.) Makes about 5 cups. Bon Appetit June 1991