| | PRALINE |
| 1/2 | c | Sugar |
| 1/4 | c | Water |
| 1 | c | Hazelnuts; toasted |
| | FILLING |
| 1 | c | Fresh tangerine juice; (from about 5 |
| | ; tangerines) |
| 1 | c | Plus 10 tablespoons sugar |
| 8 | lg | Egg yolks |
| 1 | c | Plus 10 tablespoons water |
| 1/2 | c | Whipping cream |
| 1 | tb | Grated tangerine peel |
| 1 | | Container mascarpone cheese or 16 ounces; (8.8-ounce) |
| | ; whipped cream cheese |
| 7 | tb | Grand Marnier or other orange liqueur |
| 5 | ts | Instant espresso powder or instant coffee |
| | ; powder |
| 3 | pk | Champagne biscuits; (4-inch-long |
| | ; ladyfinger-like |
| | ; biscuits) (about) |
| | ; (4.4-ounce) |
| | Unsweetened cocoa powder |
| | Tangerine slices; (optional) |