Korean potato pancakes (Gamjajeon: )

The recipe is here: http://www.maangchi.com/recipe/gamjajeon
Ingredients:
1 pound peeled potato
teaspoon salt
cup water
cup chopped Asian chives
vegetable oil
for garnish

red and hellow bell pepper, slice into 1 inch strips
for dipping sauce

2 tablespoons of soy sauce
1 tablespoon of white vinegar
a pinch of roasted sesame seeds
Directions

Cut the peeled potato into small chunks and add to a food processor
Add water, chopped chives, and salt. Blend it well until creamy puree
Put the mixture in a strainer over a bowl to strain. Press it down with a spoon gently so that the starch water will go through the strainer.
Put the strained potato mixture in a bowl
Wait for 1 minute for the starch to sink in the bowl
Pour out the water to get the starch. Add the starch to the potato mixture and stir with a spoon.
Heat up a non-stick pan over medium heat
Add a few drops of vegetable oil and spoon the mixture and place it on the pan. Spread it nicely to make about 2 inch disks. Repeat this to fill it your pan depending on your pan size.
When the bottom part starts a little light brown, turn it over. And add the garnish strips and press it in with a spatular. Cook about 1 minute until the bottom part turns golden brown. Turn it over and cook 10 seconds so that the top part won't brown.
Transfer it to a serving plate. Repeat it. You will get about 10 pancakes
Combine soy sauce, vinegar and sprinkle sesame seeds in a small bowl.
Serve hot with the dipping sauce