Prepare the Ingredients: Start by cooking your Japanese short-grain rice according to the package instructions. For the best texture, ensure the rice is slightly sticky, which is perfect for absorbing the flavors of the mix.
Make the Seasoning Mixture: In a small bowl, combine the sake, mirin, soy sauce, sugar, dashi powder, and water. Stir well until the sugar and dashi are completely dissolved. This mixture will create a flavorful base that infuses the rice with delightful umami and a hint of sweetness.
Cook the Clams and Bamboo: In a skillet or pan, pour in the seasoning mixture and bring it to a gentle simmer. Add the baby clams along with their juice and the bamboo shoots. Let them simmer in the seasoning for about 5 minutes to allow the flavors to meld together beautifully.
Mix the Rice: Transfer the cooked rice to a large mixing bowl. Gently fold in the clam and bamboo mixture, ensuring not to mash the rice grains. Mix until everything is evenly distributed.
Garnish and Serve: Sprinkle the sliced green onions on top for a fresh, colorful garnish. Serve your Baby Clam Maze-Gohan while it's warm to enjoy its full flavor.