Brown sugar and dark chocolate are combined to make this rich pot de creme.
Position rack in bottom third of oven and preheat to 325 degrees F. Arrange six 3/4-cup ramekins or custard cups in a 13 x 9 x 2-inch metal baking pan. Bring 1 cup half and half to boil in heavy medium saucepan. Remove from heat. Add chocolate and whisk until melted and smooth. Whisk in remaining 1 cup half and half; cool to lukewarm. Beat yolks, sugar and salt in medium bowl until well blended. Gradually whisk in chocolate mixture, then vanilla. Strain custard into 4-cup glass measure. Pour custard into ramekins (about 1/2 cup each). Pour enough hot water into pan to come halfway up sides of ramekins. Place pan in oven; lay sheet of foil loosely over top of dishes. Bake puddings until center is softly set, about 38 minutes. Remove pan from oven; cool puddings in water bath 1 hour. Refrigerate until cold, at least 3 hours. Then cover and keep refrigerated. (Can be made 2 days ahead. Keep refrigerated.) Top puddings with whipped cream and chocolate curls, if desired, and serve. NOTE: If using the pots de creme pots, divide the custard among 12 pots and reduce the cooking time.