Heat 2tsp oil in a saute pan, add the veggies (carrot, broccoli, cabbage, scallions and mushrooms), garlic and cook till the veggies are cooked through and tender, about 8~10 minutes.
Add the gojuchang (if using), sesame oil, powdered seaweed, salt and pepper. Mix well and cook for another 1~2 minutes.
Add the vegetable mixture to cooked rice. Mix well and let cool a little bit.
When cool enough to handle, take about one generous tablespoon of rice mixture and form into round balls. Lightly grease your hands not avoid rice sticking. Place to a plate and enjoy with the soup for a healthy & comforting meal.