Squeeze the orange. Wash the sage leaves and cut into thin strips.
Melt the butter in a pan and let the sage steep over medium heat for about 2 minutes. Then add the freshly squeezed orange juice and season well with salt and pepper, fine-tune with a pinch of nutmeg. Let the sauce reduce over medium heat.
Meanwhile, cook the tortellini in salted water according to the instructions on the packet and then drain. When the sauce is slightly creamy, add the tortellini and mix well. If necessary, bind the sauce with a little flour. Serve quickly and enjoy!