For the charred leeks, trim the leeks and heat a hotplate or grill pan until very hot. Cook the leeks until dark and charred on the outside

Place the leeks in a vacuum bag, seal and cook at 85°C in a water bath for 20 minutes

Remove from the bag and reserve the juices for the consommé

Remove and reserve the outer layers of the leeks until you reach the hearts and set aside in the fridge. The outer leaves will be used for the leek ash emulsion. Reserve the other trimmings for the leek consommé

For the leek consommé, weigh the leek trimmings and place in a vacuum bag with 25ml of water for each 100g. Seal and cook in a water bath at 90°C for 14 hours, or in a tray filled with water in the oven. If using an oven tray, top up the water as necessary

Add the leek juices to the cooked leek hearts, freeze the mixture, then put the frozen block into a sieve lined with muslin or a J-cloth and allow it to defrost and drip through to give a golden brown liquid

Before cooking the lobster, place it in the freezer to render it insensate. Once the lobster is insensate, bring a pot of water to the boil. Place it on its back with its claws tied and hold it firmly by the top of its head. Place the tip of a very sharp chef's knife on the head just beneath its mouth, lining the blade up with the lobster’s midline with the blade side pointed toward its tail

Pierce the lobster’s head downward, then place the knife tip just to the body side of the junction of its tail and thorax and cut through the midline

Immediately after killing the lobster, plunge it into boiling water for 1 1/2 minutes. Lift out of the water and remove the tail meat from the shell. Separate the head, remove the meat from the claws and knuckles and set aside for the furikake

Mix the sugar, salt and dill in a bowl and spoon it over and under the lobster tail, so it is completely covered. Cure for 3 hours in the fridge, then remove from the cure and cut the thickest part of the tail into 4 medallions

For the lobster furikake, mix the lobster knuckles and claws with the rice wine and cook in a pot very slowly, stirring constantly, for 45 minutes to 1 hour until the meat completely dehydrates and the mixture turns into a floss. Season with togarashi and salt and preserve in a dry container

Split the remaining piece of lobster tail lengthways into 4 rectangular pieces

Preheat the oven to 240˚C/gas mark 9

For the leek ash emulsion, place the outer leek leaves in an oven and cook until blackened. Once they start to burn, remove, cool and grind them to a powder in a coffee or spice grinder. Separate the eggs and place the 2 egg yolks and the olive oil in a food processor, add the ash and mix to form a mayonnaise-like texture

Reheat the leek hearts with some butter and salt in a grill pan just before serving

Before serving, warm the lobster tail pieces in a butter emulsion (2 parts butter, 1 part water at a simmer) and serve warm. Bring the medallions to room temperature, drizzle a little melted butter over them and divide onto 4 plates

Add a little of the emulsion to the leek hearts and to garnish the plate. Add the warm consomme and furikake before serving