01 - Preheat oven to 425°F. Butter four 6 oz ramekins thoroughly and dust with cocoa powder, tapping out excess.
02 - Combine chopped chocolate and butter in a heatproof bowl over simmering water using a double boiler. Stir until completely melted and smooth. Remove from heat and allow to cool slightly.
03 - In a separate bowl, whisk together eggs, egg yolks, and granulated sugar until pale and slightly thickened.
04 - Gently fold the melted chocolate mixture into the egg mixture until fully combined.
05 - Sift flour and salt into the combined mixture and fold gently until just incorporated, avoiding overmixing.
06 - Evenly divide the batter among the prepared ramekins.
07 - Place ramekins on a baking sheet and bake for 11 to 12 minutes, until edges are set but centers remain soft.
08 - Remove from oven and let stand for 1 minute. Carefully loosen edges with a knife, invert each cake onto a plate, and serve immediately with a scoop of vanilla ice cream. Optionally dust with powdered sugar and garnish with berries or mint.