Poached trout, creamy mash and watercress sauce recipe

25 INGREDIENTS • 10 STEPS • 1HR

Poached trout, creamy mash and watercress sauce recipe

Recipe
Elliott Grover has created a light, flavour-packed plate with gently poached loch trout fillets, served with herby mash, grilled asparagus, a sharp gribiche sauce and a silky watercress sauce, too.
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Elliott Grover has created a light, flavour-packed plate with gently poached loch trout fillets, served with herby mash, grilled asparagus, a sharp gribiche sauce and a silky watercress sauce, too.
author_avatar
Elliott Grover
Elliott Grover is a chef best known for bold, British flavours and expertly executed comfort food. He’s led kitchens at some of the capital’s most iconic restaurants.

1HR

Total time

Ingredients

Servings
2
1 pack
M&S Scottish loch trout fillet
220g per pack
300 g
M&S asparagus bundle
1 pack
M&S Gastropub mashed potatoes
450g per pack
15 g
parsley, finely chopped
For the poached trout
1/2 tsp
fennel seeds
1 tsp
whole black peppercorns
150 ml
M&S crisp and zingy white wine
1 sprig
tarragon
2 sprigs
parsley
1
fennel bulb, sliced
1/2
M&S Remarksable Value lemon, juice only
For the sauce gribiche
3
M&S free range medium eggs
1/2 tsp
Dijon mustard
1/2
M&S Remarksable Value lemon, juice only
1 tsp
white wine vinegar
50 ml
M&S cold pressed rapeseed oil
20 g
M&S pickled cocktail cornichons, roughly chopped
20 g
M&S nonpareilles capers, roughly chopped
5 g
parsley, finely chopped
2 sprigs
tarragon, leaves picked, chopped
For the watercress sauce
1 tbsp
M&S Remarksable Value unsalted British butter
1
large M&S British echalion shallot, finely diced
50 ml
M&S crisp and zingy white wine
100 ml
double cream
2 bags
watercress
80g per bag
Love This Recipe?
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Poached trout, creamy mash and watercress sauce recipe
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author_avatar
Elliott Grover
Elliott Grover is a chef best known for bold, British flavours and expertly executed comfort food. He’s led kitchens at some of the capital’s most iconic restaurants.

Method

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step 1
Make your poaching liquor by adding the fennel seeds (1/2 tsp), peppercorns (1 tsp), white wine (150 ml), tarragon (1 sprig), parsley (2 sprigs), fennel (1), lemon juice (1/2) and 200ml of water to a large saucepan. Bring to a simmer, then turn off and leave to infuse.
step 2
To make the sauce gribiche, bring a large saucepan filled with water to a boil. Carefully lower in the eggs (3) and boil for 8 minutes. Drain and run the eggs under cold water, then peel, cut in half and scoop out the yolks.
step 3
Place the yolks into a bowl, add the Dijon mustard (1/2 tsp), lemon juice (1/2), and white wine vinegar (1 tsp). Add a pinch of salt and pepper and whisk until you have a smooth paste. Slowly drizzle in the rapeseed oil (50 ml), whisking until a thick mayonnaise forms.
step 4
Dice and add in the egg whites, along with the chopped cornichons (20 g), capers (20 g), parsley (5 g) and tarragon (2 sprigs). Season to taste with salt and pepper.
step 5
To make the watercress sauce, add the butter (1 tbsp) to a saucepan over a medium heat. Add the diced shallot (1) and cook for 3-4 minutes. Turn up the heat, add the white wine (50 ml) and simmer for 5 minutes, until reduced by half.
step 6
Stir in the double cream (100 ml), remove from the heat and leave to cool. Add to a blender with the watercress (2 bags) and blend until smooth.
step 7
Meanwhile, heat the poaching liquor until simmering. Lower the heat, carefully lower in the trout (1 pack) and cook for 6-7 minutes, until just cooked.
step 8
Meanwhile, turn up the grill to high. Drizzle the asparagus (300 g) in oil and place onto a foil-lined baking tray. Grill for 5-6 minutes, until lightly charred. Season with a pinch of salt.
step 9
Heat the mash (1 pack) in the microwave according to the packaging instructions and stir through the parsley (15 g).
step 10
Using a slotted spoon, transfer the trout to kitchen paper to absorb any excess water, then serve with a dollop of mash, the grilled asparagus and your sauces.
step 10 Using a slotted spoon, transfer the trout to kitchen paper to absorb any excess water, then serve with a dollop of mash, the grilled asparagus and your sauces.

ONE LAST THING....

Due to our seasonal product ranges, ingredient availability may vary. We recommend searching for ingredients and checking the stock in your local store using our online catalogue or speaking with a colleague in-store for the most up-to-date information. Leave a comment below the recipe if you’d like to ask about an ingredient substitution and one of the team will get back to you to suggest a relevant swap, if applicable.

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