Preparing meat: Season the Chateaubriand generously with salt and pepper. Heat a knob of butter in a pan and sear the meat on all sides, including the sides. This helps retain the juices when cutting. Then let cool completely.
To make Duxelle: Chop the shallots, garlic and mushrooms very finely (this can be done in a food processor). Melt butter in the pan and fry the shallots until translucent. Then add the mushrooms. Bake well until all the moisture has evaporated and the mass is dry. Season with salt and pepper. Let cool.
Preparing spinach: Briefly fry or blanch the spinach. Then squeeze very well (use kitchen paper) and chop finely. Set aside.
To prepare ham layer: Place a large piece of cling film on your work surface. Place the slices of ham on top in a rectangular shape, slightly wider than the meat. Divide the duxelle evenly over the ham and then add the finely chopped spinach on top.
Packing meat: Place the meat on the foil at the beginning of the layer and roll up tightly using the foil. Close tightly and let rest in the refrigerator for at least 30 minutes (longer is also possible, even overnight).
Packing puff pastry: Roll out the puff pastry (cold temperature is important!). Remove the meat from the foil and place it on the dough. Roll up tightly and fold the sides at the bottom. Place on a baking tray lined with baking paper, seam side down.
Finishing: Mix the egg yolk with a dash of milk or water and brush the dough all over. Cut the extra sheet of puff pastry with a design and place it decoratively on top. Brush again with dorure.
Baking: Preheat the oven to 185°C. Preferably use a food thermometer: cook to a core temperature of 45°C for rare. Allow approximately 30–40 minutes of baking time.
To serve: Let the meat rest for 10 minutes before carving.
Tips
- Gebruik een kernthermometer voor een perfecte garing.
- Laat alle vullingen volledig afkoelen voor je begint te rollen.
- Dit gerecht kan je perfect de dag voordien voorbereiden.