Grate the potatoes using the large holes of a box grater. Put into a large bowl of cold water, stir to remove the starch, drain and rinse. Put the grated potatoes in a clean kitchen towel and squeeze to remove excess moisture.
Heat the butter and oil together in a 12-inch nonstick pan over medium-high heat. Season the potatoes with salt and pepper. Place the potatoes in a single layer in the pan and cook until the underside forms a brown crust, 3 to 4 minutes. Begin to stir the potatoes and continue to cook until browned all over and cooked through. One minute before they're done, stir in the parsley and garlic. Serve immediately.
Recipe courtesy of The Kitchen