Egg Custard Chawanmushi with Shiitake and Spinach

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Silky steamed egg custard infused with delicate dashi broth, earthy shiitake mushrooms, and fresh spinach leaves. This Japanese recipe, ready in about 35 minutes, pairs eggs, dashi stock, soy sauce for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 120 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 10 min Cook: 25 min Serves 4 Japanese cuisine 120 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a large bowl, beat 4 large eggs gently to avoid creating bubbles. Add 2 cups warm dashi stock, 1 tbsp soy sauce, 1 tbsp mirin, and 1/4 tsp salt. Stir until combined and strain the mixture through a fine sieve for smoothness.
  2. Step 2: Distribute thinly sliced 4 shiitake mushrooms, 1 cup roughly chopped fresh spinach leaves, and optionally 4 slices kamaboko evenly into 4 heatproof cups or ramekins.
  3. Step 3: Pour the egg mixture gently into each cup, filling about 3/4 full to allow room for expansion.
  4. Step 4: Cover each cup tightly with aluminum foil to prevent water ingress.
  5. Step 5: Place the cups in a steamer over simmering water and steam gently for 15 minutes, then reduce heat to low and continue steaming for an additional 10 minutes until the custard is just set but still silky.
  6. Step 6: Remove from heat and let cool slightly before serving warm for a delicate appetizer.

Frequently asked questions

How long does Egg Custard Chawanmushi with Shiitake and Spinach take to make?

Total time is about 35 minutes (10 min prep + 25 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Egg Custard Chawanmushi with Shiitake and Spinach?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep eggs from drying out.

Can I substitute ingredients in Egg Custard Chawanmushi with Shiitake and Spinach?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Egg Custard Chawanmushi with Shiitake and Spinach for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Egg Custard Chawanmushi with Shiitake and Spinach?

Japanese japanese like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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