In a small saucepan, add 1-inch of water. Place steamer basket inside the pan and bring water to a boil. Add the egg to the steamer basket, cover with lid and set timer for 8 minutes.
In meantime, in a small bowl, stir the soy sauce and sugar together. Add in the bamboo shoots and mix well. Set aside.
Empty the ramen soup seasoning package contents to a serving bowl.
Bring another saucepan with 2 cups of water to a boil. Add in the dried noodles and cook for 4 minutes. When noodles are just about ready, add in the spinach leaves and stir. The spinach only takes a few seconds to cook. Ladle in the hot water from the saucepan into the serving bowl with soup seasoning. Stir well to dissolve the soup seasoning. Use chopsticks to add in the cooked noodles and spinach to the bowl.
When the egg is done cooking, drain and rinse egg with cool water. Peel egg and slice in half. Serve miso ramen with egg, bamboo shoots, fish cake, corn, green onion and seaweed.