01 - 
                Grate the potatoes and onion using a box grater. Place the grated mixture in a clean kitchen towel and squeeze out as much moisture as possible.
              
              
              
                02 - 
                In a large mixing bowl, combine the grated potatoes, grated onion, flour, egg, salt, and black pepper. Stir until well incorporated.
              
              
              
                03 - 
                Place a heavy-bottomed skillet over medium heat and add about 1 tablespoon of melted butter.
              
              
              
                04 - 
                Scoop approximately 60 ml (about 1/4 cup) of the potato mixture into the skillet for each pancake. Flatten each portion slightly with a spatula.
              
              
              
                05 - 
                Fry each pancake for 3 to 4 minutes on each side, or until golden brown and crispy. Adjust heat as necessary to prevent burning.
              
              
              
                06 - 
                Continue with the remaining mixture, adding more butter to the skillet between batches as needed.
              
              
              
                07 - 
                Serve the potato pancakes hot, accompanied by applesauce or sour cream if desired.