Place the ricotta cheese in a fine-mesh strainer or cheesecloth and let it drain for 15 minutes to remove excess moisture.
In a medium mixing bowl, combine the drained ricotta, egg whites, parmesan cheese, sea salt, black pepper, and nutmeg until smooth.
Gently fold in the whole wheat flour one tablespoon at a time until a soft, slightly tacky dough forms; avoid over-mixing to keep the gnocchi light.
Bring a large pot of salted water to a gentle simmer.
Dust a clean surface with a pinch of flour, roll the dough into long ropes about half an inch thick, and cut into 1-inch pieces.
Drop the gnocchi into the simmering water and cook until they float to the surface, which usually takes about 2 to 3 minutes.
While the gnocchi boil, melt the ghee in a large non-stick skillet over medium heat and add the fresh sage leaves.
Use a slotted spoon to transfer the floating gnocchi directly into the skillet with the ghee and sage.
Sauté the gnocchi for 2 minutes until the edges are slightly golden and the sage is crisp, then serve immediately.