Ajitsuke tamago (味付け玉子) is a soft-boiled marinated egg, iconic in Japanese cuisine. The texture is unique: the yolk remains creamy and slightly runny, while the white absorbs the flavors of a sweet, umami soy-based marinade.
This preparation is typically served with ramen. Its origin dates back to the late 19th century, during the Meiji era (1868–1912), a period of modernization when Japan incorporated new culinary influences, particularly from China, into its traditional cuisine.
Ajitsuke tamago has become a versatile ingredient, used not only in ramen but also in donburi (rice bowls), bento (lunch boxes), and even Japanese sandwiches (tamago sando).
Namiko Hirasawa Chen, founder of Just One Cookbook, emphasizes the importance of cooking soft-boiled eggs perfectly. Chef Charlotte Ng highlights precise cooking to achieve a runny yolk.
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Cook soft-boiled eggs.
Peel them.
In a small saucepan over low heat, mix the marinade ingredients, adding the garlic and ginger, and the spring onion just before removing from heat.
Place the eggs in the jar and cover with the marinade.
Let cool.
Refrigerate covered for 12 to 24 hours.
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Do not marinate for more than 48 hours; consume within 2–3 days.
Use high-quality ingredients such as authentic soy sauce, mirin, and sake for the best flavor.
The marinade can be enhanced with optional ingredients such as kombu or katsuobushi to add depth to the flavor.
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