Grey mullet with pearl barley pudding, black garlic and spring onion

First make the lemon oil. Seal all of the ingredients in a vac pac bag and cook at 50°C in a water bath for 12 hours, then drain through muslin. At the same time, soak your pearl barley, also for 12 hours, then drain

For the Jerusalem artichoke purée, peel and thinly slice the artichokes using a mandoline. Transfer to a pan, pour in the milk and seasoning and bring to a gentle boil

Turn down to a simmer and cook with the lid on until there is no liquid left. Transfer to a blender, blitz until silky smooth and pass through a sieve. Store in the fridge until required

For the black garlic purée, separate the garlic cloves and simmer gently in enough water to cover until soft. Strain the garlic, reserving the water, and pop the garlic out of their skins. Purée in a blender with enough cooking water to form a thick paste. Store in a squeezy bottle until ready to serve

In a food mixer with the paddle attachment, cream the butter and sugar until light and pale in colour, then on a low speed, add the cep powder, salt and flour and just bring together. Roll into 6 equally sized logs and freeze until set

Preheat the oven to 160°C/gas mark 3

Remove the logs from the freezer and grate onto a silpat. Place in the oven for 3 minutes

Remove from the oven and leave to cool before lightly breaking up with a fork into a fine crumb. Store in an airtight container until ready for use

For the pearl barley, sweat the shallots until soft but not coloured, add the pearl barley and a pinch of salt and pepper. Cover with the fish stock, bring to the boil then simmer for approximately 30 minutes, or until soft

Bring a pan of lightly salted water to the boil and add the spring onions. Blanch for 2-3 minutes then drain

Cut the spring onions in half lengthways and place, cut-side down, on a very hot griddle pan. Cook until they have nice char lines, remove and leave in a warm place

Return the Jerusalem artichoke purée to the pan and warm through. Add a little cream to achieve a silky-smooth consistency

Combine 1 small ladle of pearl barley with the artichoke purée and warm to risotto consistency

To cook the fish, season the skin of each fillet. Place a large non-stick frying over a medium-high heat with a dash of rapeseed oil. Once the pan is hot, place each fillet, skin-side down, into the pan and apply gentle pressure to ensure that each fillet is flat

Allow to cook for 2-3 minutes, until the skin is crispy and lightly golden. Remove the pan from the heat, turn each fillet over and allow the residual heat of the pan to cook the fish for a further 1 minute

Divide the pearl barley pudding into the centre of each plate, followed by a drizzle of the lemon oil. Squeeze out dots of black garlic purée alongside and place each fillet on top of the pearl barley, sprinkle a thin line of cep crumb over the fish. Finish with the charred spring onion and serve immediately