1. Preheat the oven to 350°F.
2. Melt the chocolate and butter in a double boiler, stirring.
3. Remove from heat and add the sugar, then the eggs and salt.
4. Add the flour and rose pepper; mix.
5. Pour into the mold and bake for 15 minutes.
6. Let rest for 5 minutes in the turned-off oven after cooking.
7. Remove from the oven and let cool to room temperature. Refrigerate for 1 hour.
8. Remove from the refrigerator, unmold, cut into individual portions, and serve.