Peel 4 Potatoes. Place them into a bowl of cold water after you peel each one - keeping them in water will keep from oxidizing and changing colors.
Now, we highly recommend using a hand-grater (it will produce much better chewing texture than mixing in a blender). Take one potato and grate it through the hand grate. After grating the 1st potato, grate-in ½ an onion. The onion mixture will prevent the batter potatoes from oxidizing (and turning grey in color).
Continue grating-in the rest of the potatoes. Now, stir the grated potato and onion mixture together evenly.
Season the pancake mixture with 1 teaspoon of salt! (Note: You can add another 1 teaspoon(!) of salt if you will not dip in soy sauce later.) We will under-season the pancakes as it's usually dipped into a soy sauce dip when eating.
Finally, add-in 1 Cup of Potato Starch Powder into the batter. Mix it in evenly - it's ready now for pan-frying!