Instructions

1. Begin by preparing your workspace and gathering all the ingredients: 200g of dark chocolate, 100g of unsalted butter, 4 large eggs, 100g of sugar, the zest and juice of 1 orange, and a pinch of salt.
2. Set a heatproof bowl over a pot of simmering water to create a double boiler. Ensure that the bottom of the bowl does not touch the water. Add the dark chocolate and unsalted butter to the bowl, stirring occasionally until melted and smooth. Remove from heat and let it cool slightly.
3. In a large mixing bowl, crack the 4 large eggs and add the 100g of sugar. Using a whisk or an electric mixer, beat the eggs and sugar together until the mixture becomes pale and fluffy, which should take about 5 minutes.
4. Once the chocolate and butter mixture has cooled slightly, gently fold it into the egg and sugar mixture. Use a spatula to combine them carefully, ensuring you maintain as much air in the mixture as possible.
5. Add the zest of 1 orange and the juice of 1 orange to the mixture. Incorporate these ingredients gently, ensuring they are evenly distributed throughout the chocolate mixture.
6. Finally, add a pinch of salt to the mixture. This will enhance the flavors of the chocolate and orange. Fold the salt in gently.
7. Prepare a rectangular or square dish by lining it with plastic wrap or parchment paper, allowing some overhang for easy removal later. Pour the chocolate mixture into the prepared dish, smoothing the top with a spatula.
8. Cover the dish with plastic wrap and refrigerate for at least 2 hours or until set. This will allow the marquise to firm up and develop its flavors.
9. Once set, carefully lift the marquise out of the dish using the overhanging plastic wrap or parchment paper. Slice into squares or rectangles for serving.
10. Serve chilled, optionally garnishing with additional orange zest or a dusting of cocoa powder for an elegant touch. Enjoy your Marquise de Chocolate à la Orange!