Step 1

Preheat the oven to 350°F (180°C) and grease a 9-inch (23 cm) spring form.*

Step 2

In a medium-size saucepan place on low heat, melt the chocolate with the milk. Add the butter and allow to melt, stirring as needed.

Step 3

Turn off the heat, then add the sugar and the yolks, one at a time, stirring between each addition. Sift in the flour and stir well.

Step 4

In a medium-sized bowl, whisk the whites with a pinch of salt until soft peaks form. Carefully incorporate to the chocolate mixture in two or three additions.

Step 5

Pour into the prepared spring form and bake for about 30-35 minutes.