This dark chocolate lava cake recipe is perfect for those who prefer a richer, more intense chocolate flavor. To make this cake, you will need dark chocolate, butter, eggs, sugar, flour, and salt. Melt the dark chocolate and butter together, then whisk in the eggs, sugar, flour, and salt. Pour the batter into ramekins and bake for 12-14 minutes. Serve warm with a sprinkle of sea salt.