Use a kitchen scale to weigh the potatoes. Whether you're using several small potatoes or a single medium sized potato, weighing them helps to confirm about 8 ounces (1/2 pound). With experience, you can eyeball it. Without a scale, you can gauge that you want to end up with about a cup of shreds.
Peel the potatoes if you like. Then use the large holes of a box (or similar) grater to shred. To save my fingertips from the shredder, I slice up the little potato nubbins that remain and add to the shreds. I end up with about 1 cup of potato shreds.
Put the shreds in a strainer and rinse well with cold water for about 20 seconds.
Then dry the rinsed potatoes. Either transfer the shreds to a clean, dry dish towel and squeeze out excess water (please note the potatoes may stain dish towel.) Or press the shreds between layers of clean dry paper towel. When you’re done, the shreds should look and feel dry to the touch.
Toss the dry shreds with the salt. (If you prefer, salt the hash brown to taste once they’re on the pan.)
Add oil to a non-stick pan or griddle. Heat to medium. (If cooking on a griddle, I use a heat proof brush to spread the oil thoroughly over the surface. With a pan, just tilt for even coverage.)
Put potato shreds in the pan or griddle forming several small patties, batching if needed. Make each hash brown patty by scooping about 2 tablespoons of shreds onto the pan and spreading the shreds into a 3-to-4-inch round, creating a thin, lacy patty. This recipe yields 6 rounds of hash browns, each about 3-4 inches in diameter.
Using a griddle, I’m able to cook all the hash browns in one batch. With a 12-inch skillet, two batches are required – divide the oil between the batches, using more as needed.
Cook for about 3 minutes on the first side until you start to see golden brown color, then flip and cook on the second side until potatoes are cooked and hash browns are golden brown and crispy to your liking. Repeat for second batch if necessary.
Serve as soon as possible, adding salt to taste if needed.