These instructions are assuming you are using split and hulled mung beans.
Place the mung beans in a small bowl and cover to twice their depth in water. Add the rice. Let them soak at least 4 hours, preferably overnight.
Drain and rinse the beans and rice and set them aside.
The mung bean sprouts can be used raw. But if you are going to blanch them, bring a pot of water to boiling. Add the sprouts and cook for 2 minutes. Immediately remove from the boiling water and rinse them under cold water.
Squeeze the sprouts to remove moisture. Add the sprouts to a large bowl.
Squeeze the liquid out of the kimchi (it does make a tasty, probiotic drink). Place in bowl. You want as much liquid out as possible.
Slice the scallions into approximately 1 inch lengths. Add to the bowl.
Add the sesame seeds and sesame oil.
Place the beans, rice, and ¾ cup of water into a blender. Blend the beans until a runny, somewhat coarse batter forms. Add to the bowl.
Mix everything in the bowl well.
You should make the pancakes as soon as possible after mixing the batter. If any liquid separates, just mix the batter again.
Heat your skillet over medium high heat. When hot, add a oil to cover the bottom of the pan. Once the oil is hot and shimmering, add in enough pancakes to fit into the pan.
Let the pancakes cook for about 2 minutes and don't touch them. Slide the spatula under the pancakes to loosen them after 2 minutes. If they are browned and crispy, lower the heat to medium and flip them over. Cook them until crispy, about 5 minutes.
Do the same with the rest of the batter, though leave the heat on medium.
Enjoy!