Preheat the oven to 400°F. Rub the beef tongue with salt and your favorite seasonings.
Lay out a large piece of aluminum foil on the table. Add 2 parchment papers (one on top of each other). Place the beef tongue in the center, and roll it to seal completely and well.
Bake in the oven for 2.5 hours. Then, let it stay in the turned off oven for 40 more minutes.
Remove from the oven, open carefully. The skin will peel off easily.