Fish with mustard sauce and mashed potatoes with caramelized onions

Fish with Mustard Sauce and Caramelized Onion Mashed Potatoes: A Delicious and Comforting Recipe

Total Time: 50 minutes
Preparation Time: 15 minutes
Cooking Time: 25 minutes
Servings: 4

Fish with mustard sauce and caramelized onion mashed potatoes is a recipe that combines the subtle flavor of fish with the richness of a creamy sauce and the sweetness of caramelized onions, providing a comforting and healthy meal. The harmonious taste of the ingredients and the velvety texture of the mashed potatoes will turn dinner into a true feast for the senses.

A Brief History of the Recipe

This combination of fish with mustard sauce and mashed potatoes is inspired by the culinary traditions of various cultures, where fresh fish is considered a staple ingredient, and mustard sauces add a touch of refinement. The caramelization of onions is an ancient cooking technique that brings out their natural sweetness, transforming a simple ingredient into an exceptional accompaniment.

Necessary Ingredients

To prepare this recipe, you will need the following ingredients:

For the fish:
- 1 pangasius fillet (~700 g)
- Fish seasoning (salt, pepper, paprika, etc.)

For the sauce:
- 250 ml milk
- 50 g butter
- 1 1/2 tablespoons flour
- Salt, pepper to taste
- 1 teaspoon mustard

For the mashed potatoes:
- 500 g potatoes
- 1 tablespoon butter
- 1 tablespoon milk
- 1 onion
- Salt, pepper to taste
- Fresh herbs (parsley or dill)

Step-by-Step Instructions

Step 1: Preparing the Fish

1. Start by rinsing the pangasius fillet under cold running water. Pat it dry with a paper towel to remove excess moisture.
2. Season the fish with salt, pepper, and any other preferred spices, such as paprika or herbs, to enhance its flavor.
3. Place the fillet in a baking dish lined with parchment paper to prevent sticking and make cleanup easier. Preheat the oven to 180°C (350°F) and bake the fish for 20-25 minutes, until it becomes opaque and flakes easily with a fork.

Step 2: Preparing the Sauce

1. In a saucepan or skillet, melt the butter over medium heat. Once fully melted, add the flour and whisk to form a roux. Continue stirring for 1-2 minutes to cook the flour, being careful not to let it burn.
2. Gradually add the warm milk while continuously whisking to prevent lumps. If lumps do form, don’t worry—you can blend it to achieve a smooth texture.
3. Keep the sauce on the heat, stirring, until it thickens. Season with salt, pepper, and add the mustard, mixing well.

Step 3: Preparing the Mashed Potatoes

1. Peel the potatoes, wash them, and cut them into evenly sized cubes for uniform cooking. Boil them in salted water for about 15 minutes, until tender.
2. In a separate skillet, slice the onion into thin strips and caramelize it over low heat, stirring occasionally, until it becomes golden and sweet.
3. Once the potatoes are cooked, drain the water and add the butter, milk, seasonings, and 1 tablespoon of caramelized onions. Mash well until you achieve a creamy consistency. You can also add finely chopped herbs for extra flavor.

Step 4: Assembly and Serving

1. Once all components are ready, place portions of mashed potatoes on plates, top with the fish fillet, and generously drizzle with mustard sauce. Finish with a sprinkle of caramelized onions for added flavor.
2. You can garnish the plate with a few fresh herb leaves for an appealing presentation.

Serving Suggestions

This dish pairs wonderfully with a fresh salad or grilled vegetables. Additionally, a dry white wine or a chilled fruit tea will perfectly complement the meal.

Variations and Tips

- Fish Alternatives: You can substitute pangasius with other types of fish, such as salmon or cod, each offering a distinct flavor.
- Alternative Mash: Instead of potatoes, you can try cauliflower or carrot mash for a healthier option.
- Customized Sauce: Add fresh herbs, such as dill or chives, to the mustard sauce for a refreshing twist.

Nutritional Information

This recipe is rich in protein due to the fish, while the potatoes provide complex carbohydrates. Mustard adds a beneficial acidity for digestion. One serving contains approximately 450 calories, making it a balanced choice for a healthy dinner.

Frequently Asked Questions

- Can I use frozen fish? Yes, just make sure to fully thaw and dry it before seasoning.
- What type of mustard is best? Dijon mustard is a popular choice, but you can experiment with sweet mustard or even apple mustard for an added flavor dimension.
- How can I store leftovers? You can keep the fish and mashed potatoes in an airtight container in the refrigerator for 2-3 days, and the sauce can be easily reheated on the stovetop.

Try this simple and quick recipe, perfect for family dinners or special occasions! Each bite will bring a touch of happiness and a sense of comfort to your day. Enjoy your meal!