1. Preheat the oven to 350°F.

2. Melt the chocolate in a double boiler. Add the pieces of butter and mix. Add the sugar and flour. Add the egg yolks.

3. Beat the egg whites with a pinch of salt until they are stiff and add them gradually to the mixture.

4. Butter and flour a mold. Pour the mixture into the molds and bake for 20 minutes.

5. Using a mixer, whip the cream and sugar until stiff.

6. Remove the cake from the oven and cover with whipped cream.

7. Decorate with strawberries and basil leaves before serving.