Waterzooi

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

A creamy, comforting Belgian fish stew made with leeks, potatoes, and a rich egg yolk sauce. This belgian-inspired one pot ready in about 60 minutes pairs leeks, potatoes, carrots for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 300 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: 25 min Cook: 35 min Serves 4 Belgian cuisine 300 cal/serving
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Ingredients

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Instructions

  1. Step 1: In a large pot, melt butter over medium heat. Sauté onions and garlic for 3 minutes until fragrant. Add leeks, carrots, and potatoes, cooking for 5 minutes until softened.
  2. Step 2: Stir in fish and cook for 2 minutes. Pour in milk and cream, then season with salt and pepper. Simmer for 15 minutes until vegetables are tender.
  3. Step 3: Remove from heat and whisk in egg yolk until the sauce thickens and coats the back of a spoon. Serve immediately.

Frequently asked questions

How long does Waterzooi take to make?

Total time is about 60 minutes (25 min prep + 35 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 Waterzooi?

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 leeks from drying out.

Can I substitute ingredients in Waterzooi?

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 Waterzooi 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 Waterzooi?

Belgian one pot 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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