Place the ricotta in a fine-mesh strainer for 15 minutes to remove excess moisture for a lighter texture.
In a medium bowl, whisk the egg then stir in the strained ricotta, grated parmesan, sea salt, and black pepper until well combined.
Gently fold in the whole wheat flour until a soft, slightly sticky dough forms, being careful not to overwork it.
Turn the dough onto a lightly floured surface, divide into four pieces, and roll each into a long rope about 1/2-inch thick.
Cut the ropes into 1-inch pieces and use a fork to create light indentations on each gnocchi.
Bring a large pot of salted water to a boil and cook the gnocchi until they float to the surface, about 2-3 minutes.
While the gnocchi cook, melt the ghee in a large skillet over medium heat and add the sage leaves, cooking until they are crisp and the ghee is slightly browned.
Use a slotted spoon to transfer the gnocchi directly into the skillet, adding the lemon juice and tossing gently to coat.