Japanese Creamy Potato Rice

Japanese Creamy Potato Rice is a delightful fusion comfort dish featuring fluffy Japanese short-grain rice topped with rich, buttery mashed potatoes and melty cheese, crowned with a glossy raw egg yolk. It’s a cozy, savory meal with irresistible textures and umami depth—perfect for a satisfying lunch or dinner.

Why You’ll Love This Recipe

This dish is a perfect example of fusion comfort food—simple, elegant, and deeply satisfying. The creamy mashed potatoes melt into the warm rice, while the torched cheese layer adds richness and visual appeal. The egg yolk topping brings it all together, delivering a luscious, velvety finish. Whether you’re looking for a new way to enjoy rice or a twist on mashed potatoes, this recipe delivers on all fronts.

Ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

• cooked Japanese short-grain rice
• medium potatoes, peeled and cubed
• butter
• milk or cream
• salt and white pepper to taste
• melty cheese (like mozzarella or processed cheddar)
• egg yolks (fresh and pasteurized)
• garlic powder
• mayonnaise (Japanese Kewpie preferred)
• Optional: small diced ham or cooked chicken for mixing

Directions

1. Boil the cubed potatoes in salted water until fork-tender, then drain.
2. Mash the potatoes with butter, milk, garlic powder, salt, and white pepper until smooth and creamy.
3. In a bowl, combine the hot cooked rice with mayonnaise and mix until the grains are lightly coated.
4. Place the rice in the center of an oven-safe bowl or dish, shaping it into a mound.
5. Top generously with the mashed potatoes, smoothing into a dome that covers the rice completely.
6. Lay cheese slices over the mashed potato dome.
7. Lightly torch the cheese with a kitchen torch or place under a broiler briefly until golden and melted.
8. Carefully top the center of the cheese dome with a raw egg yolk.
9. Serve immediately. Mix the yolk in just before eating for added creaminess.

Servings and Timing

Servings: 2 servings
Prep Time: 20 minutes
Cooking Time: 10 minutes
Total Time: 30 minutes
Calories per serving: Approximately 470 kcal

Variations

• Protein Addition: Mix diced ham, bacon, or cooked chicken into the rice for extra heartiness.
• Spicy Twist: Add a few drops of chili oil or sriracha over the cheese before serving.
• Herb-Infused Mash: Fold chopped chives, parsley, or green onions into the mashed potatoes.
• Truffle Version: Add a touch of truffle oil to the mashed potatoes for a luxurious flavor.
• Vegetarian Delight: Layer sautéed mushrooms between the rice and potatoes for added umami.

Storage/Reheating

This dish is best served fresh, but leftovers can be stored in an airtight container in the refrigerator for up to 2 days.
To reheat, cover loosely and microwave in short intervals, stirring gently to redistribute the heat. Note that the texture of the egg yolk will change after reheating and is best added fresh.

FAQs

What type of rice is best for this recipe?

Japanese short-grain rice is preferred for its sticky, fluffy texture that pairs well with creamy toppings.

Can I substitute regular mayonnaise?

Yes, although Japanese Kewpie mayonnaise adds a richer, slightly tangier flavor that enhances the dish.

Is it safe to eat raw egg yolk?

Yes, as long as you use fresh, pasteurized egg yolks. Always check the packaging for safety instructions.

What cheese works best?

Use melty cheese like mozzarella, processed cheddar, or any mild cheese that melts easily and smoothly.

Can I make the mashed potatoes in advance?

Yes, you can prepare the mashed potatoes a few hours ahead. Reheat gently before assembling the dish.

Do I need a kitchen torch?

While a torch provides the best control, you can achieve similar results using a broiler—just watch closely to avoid overbrowning.

What can I serve with this dish?

This dish is quite filling on its own, but a simple miso soup or green salad would complement it well.

Can I skip the egg yolk?

Yes, though the egg yolk adds richness and visual appeal, the dish is still delicious without it.

How do I make it vegan?

Use plant-based butter and milk, vegan mayo, and omit the egg yolk and cheese or substitute with vegan alternatives.

What does the mayonnaise do to the rice?

It coats the rice, adding moisture and richness while enhancing umami flavor subtly.

Conclusion

Japanese Creamy Potato Rice is a comforting, visually appealing dish that transforms simple pantry staples into a luxurious meal. With its soft, creamy layers and flavorful toppings, it’s a wonderful option for anyone seeking a modern, fusion-inspired rice bowl. Whether served as a main course or a hearty side, it’s sure to satisfy.

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