Combine rice, baking soda, garlic powder and salt in a bowl.
Add milk, kimchi juice to a mixer and blend for a few seconds.
Add in the flour mixture and scallions and mix until you have a smooth batter. It will be quite thin. Let the batter rest for a few minutes.
Meanwhile preheat a nonstick pan over medium heat.
This batter makes 2 bigger pancakes or 4 smaller ones.
Fry the pancakes for 2-3 minutes on each side, depending on how big you make them.
Combine tamari/soya sauce, rice vinegar, sesame oil and sesame seeds in a small bowl.
Serve the pancakes with kimchi, the soya sauce and more sliced scallions.