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Japanese Tamago-Style Savory Custard Mug
Dorm Room Feast

Japanese Tamago-Style Savory Custard Mug

July 9, 2026 1 min read Wild Card 8 ingredients

A silky, savory egg custard that channels the elegance of Japanese chawanmushi without the steamer or ceremony. Pure comfort in porcelain.

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Ingredients

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  • 2 eggs
  • 1/2 cup dashi or chicken broth
  • 1 teaspoon soy sauce
  • 1/2 teaspoon mirin or sugar
  • 2 mushrooms, thinly sliced
  • 2 tablespoons frozen peas or corn
  • 1 green onion, chopped
  • Sesame oil (few drops)

The Story & Steps

This is what happens when a three-century-old Japanese technique meets modern dormitory constraints. Chawanmushi traditionally requires careful steaming and precise timing, but your microwave can produce something remarkably similar with a fraction of the fuss.

The result is a wobbly, just-set custard that tastes like a warm hug from someone's grandmother—possibly a Japanese grandmother, but warmth is universal.

Preparation

  1. Crack eggs into your mug and beat lightly with a fork.
  2. Add broth, soy sauce, and mirin. Stir gently to combine without creating too many bubbles.
  3. Drop in mushrooms, peas, and half the green onion.
  4. Microwave on 50% power for 2 minutes.
  5. Check the custard—it should be starting to set around the edges. Microwave another 1-2 minutes on 50% power until just set but still jiggly in the center.
  6. Let stand for 1 minute (it will continue cooking).
  7. Top with remaining green onion and a few drops of sesame oil.

Note: The key is low power and patience. High power will turn your elegant custard into scrambled eggs, which, while edible, defeats the zen purpose of this dish.

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Ingredients