Sous Vide Salmon Recipe with Onion

Wester Ross seared salmon loin, fennel pollen, sweet onion, garden hints

Wester Ross seared salmon loin, fennel pollen and sweet onion

Starter
challenging
4
2 hours, plus 12 hours steaming and overnight drying

PT2H

PT12H

This delicious starter by Michelin-starred chef Lisa Allen has many elements that come together to create a striking dish, bursting with vibrant colours. To give the salmon a smoky, charred flavour the chef finishes the dish by lightly blowtorching the flesh.

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Ingredients

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Metric

Imperial

Seared salmon

250g of salmon loin, preferably Wester Ross, skin-on
10g of salt
10g of sugar
4 juniper berries, crushed
1 lemon, zest only
20g of olive oil

Kitchen tobacco

10g of kale
2g of nasturtium leaves
mixed herbs

Onion oil

2 onions
125g of sunflower oil
125g of olive oil

Shallot crisp

2 shallots
200g of stock syrup

White onion stock

250g of onion, finely sliced
500g of water
2g of salt

Sweet onion sauce

1kg onion, finely sliced
25g of butter
1 garlic clove
300ml of cream

Silverskin onions

4 silverskin onions
250g of white wine vinegar
125g of water
125g of sugar
6 white peppercorns, crushed

To garnish

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Dehydrator
Chamber sealer
Water bath
Blowtorch
Steam oven
Deep-fryer
Muslin cloth
Vacuum bags

Method

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Preheat a water bath to 100°C

Skin the salmon, place the skin in a vacuum bag and seal in a chamber sealer. Cook the salmon skin for 45 minutes in the water bath, then dehydrate overnight at 50°C

250g of salmon loin, preferably Wester Ross, skin-on

For the kitchen tobacco, place all of the ingredients on a tray and dehydrate overnight at 50°C

mixed herbs
10g of kale
2g of nasturtium leaves

For the onion oil, cut the onions in half and place in a very hot cast iron pan. Cook the onions over a high heat until charred on all sides. Place in a blender, add the oil and blitz to a purée. Hang in a muslin cloth suspended over a jug overnight to collect the oil that drips through

125g of olive oil
2 onions
125g of sunflower oil

For the shallot crisps, thinly slice the shallots with their root left on to hold their shape. Dip the shallot slices into the stock syrup and dehydrate at 50°C for 12 hours

2 shallots
200g of stock syrup

Preheat a steam oven to 100°C

To make the white onion stock, place the water, onions and salt in a vacuum bag and seal in a chamber sealer. Place in the steam oven and leave overnight

2g of salt
250g of onion, finely sliced
500g of water

The next day, preheat a deep-fryer to 190°C

Deep-fry the salmon skin until puffed up and golden, then break into pieces and set aside

Blitz the dried kitchen tobacco ingredients into a fine powder and set aside

Remove the bag of onion stock ingredients and cut it open. Pass the contents through a fine sieve and reserve the stock

For the sweet onion sauce, melt the butter in a medium saucepan and sweat the onions without colouring until very soft. Add 70g of the onion stock and reduce slightly, then add the cream and simmer for a further 15 minutes. Blitz to a smooth, sauce-like consistency and check the seasoning

300ml of cream
1kg onion, finely sliced
25g of butter
1 garlic clove

Preheat a steam oven to 100°C

For the silverskin onions, place the onions in a vacuum bag with the vinegar, water, sugar and peppercorns and seal in a chamber sealer. Cook in the steam oven for 15 minutes

6 white peppercorns, crushed
250g of white wine vinegar
125g of water
125g of sugar
4 silverskin onions

Remove from the bag and cut the onions in half lengthways. Set 4 of the halves aside, and char the remaining 4 cut-side down in a hot frying pan until very dark

Preheat a water bath to 52°C

Rub the salmon evenly with the salt, sugar, lemon zest and juniper berries. Leave to marinate for 30 minutes. Wash the marinade off the salmon, pat dry with kitchen paper and cut into 60g pieces

8g of salt
10g of sugar
4 juniper berries, crushed
1 lemon, zest only

Place the salmon in a vacuum bag with the olive oil and seal in a chamber sealer. Cook in a water bath for 15 minutes, or until opaque and just cooked

20g of olive oil

When ready to serve, scorch the salmon flesh with a blowtorch

To plate, place a portion of salmon in the middle of the plate with a spoonful of the sweet onion sauce. On either side of the salmon place a shallot crisp and a piece of deep fried salmon skin

Pour a little of the onion oil over the salmon and add a few of the silverskin onions. Garnish with the fresh flowers, ice lettuce, kitchen tobacco and a sprinkle of fennel pollen