| | CAKE |
| 2 | c | Cake flour |
| 1 | ts | Baking powder |
| 1 | ts | Baking soda |
| 1 | ts | Salt |
| 1/2 | c | Unsweetened Dutch process cocoa pdr |
| 2 | tb | Water |
| 2 | oz | Unsweetened chocolate |
| 3/4 | c | Whole milk |
| 2 | | Sticks butter; 8 oz, softened |
| 2 | c | Sugar |
| 4 | lg | Eggs; separated |
| 2 | ts | Vanilla |
| | CHOCOLATE FILLING |
| 1 | tb | Unsweetened Dutch process cocoa pdr; plus 2 teaspoons |
| 1 1/2 | c | Hot water |
| 3/4 | c | Sugar |
| 1 | oz | Semisweet chocolate |
| 2 | tb | Cornstarch; plus 1 teaspoon |
| 2 | tb | Cold water |
| 1/2 | ts | Salt |
| 2 | tb | Butter; in 2 pieces |
| 1 | ts | Vanilla |
| | FUDGE TOPPING |
| 12 | oz | Semisweet chocolate |
| 1 1/2 | | Sticks butter; 6 oz., softened |
| DIVIDER | | -----cut in 12 pieces |
| 1/2 | c | Lukewarm water; See Notes. |
| 1 | tb | Light corn syrup |
| 1 | tb | Vanilla |
