Prepare the dashi stock and allow it to cool to room temperature. Whisk the eggs gently in a bowl without creating too many bubbles.

Add the cooled dashi, soy sauce, mirin, and salt to the eggs. Whisk gently until combined, then strain the mixture through a fine-mesh sieve to ensure a silky texture.

Cook the shrimp in boiling water for 2-3 minutes until they turn pink and reach an internal temperature of 75°C. Set aside.

Divide the shiitake mushrooms, kamaboko slices, and cooked chicken pieces evenly among 4 heatproof cups or chawanmushi bowls.

Slowly pour the egg mixture into each cup, filling about three-quarters full. Remove any surface bubbles with a spoon.

Cover each cup tightly with aluminum foil or lids. Place in a steamer over simmering water.

Steam on medium-low heat for 15-18 minutes until the custard is just set but still slightly jiggly in the center. The custard should reach an internal temperature of 75°C.

During the last 3 minutes of steaming, gently place one cooked shrimp on top of each custard.

Remove from steamer and garnish each cup with mitsuba or parsley sprigs and a small amount of sliced pickled ginger for a spring-inspired pink accent. Serve immediately while warm.