Preheat the oven at <temperature>160<unit>°C</unit></temperature>

Cut off the leaves and root of <quantity>1</quantity> leek. Remove the outer layer and halve the leek crosswise and lengthwise

Stack a few layers of leek and cut them thinly. Spread them on a baking pan lined with parchment paper

Bake for at least 10m until deep golden brown and crispy

Blend the leek on high speed until powdered. The leek ash is ready

Peel and mince <quantity>2</quantity> garlic cloves

Add <quantity>1<unit>tbsp</unit></quantity> of olive oil to a small saucepan over medium heat and add the minced garlic. Stir until fragrant

Add <quantity>2<unit>tsp</unit></quantity> of whole grain mustard and stir to combine

Add <quantity>¼<unit>cup</unit></quantity> of white wine and evaporate for 30s

Turn the heat to low and add <quantity>2<unit>cups</unit></quantity> of almond cream and <quantity>2<unit>tbsp</unit></quantity> of nutritional yeast

Add salt and black pepper to taste

Stir to combine and bring to a boil. The mustard & almond sauce is ready

Halve <quantity>4</quantity> king oyster mushrooms. Make superficial crosswise cuts diagonally on each half

Add <quantity>2<unit>tbsp</unit></quantity> of olive oil to a pan over medium-low heat and place the mushroom cut side down. Add <quantity>1<unit>tbsp</unit></quantity> of olive oil and cook until all the oil is absorbed by the mushrooms

Flip the mushrooms and drizzle them with <quantity>2<unit>tbsp</unit></quantity> of olive oil

Flip the mushrooms and cover them with a heavy weight. Cook until slightly golden brown on the bottom

Flip the mushrooms and cover with the weight. Cook on the other side until golden brown

Add flaky salt to taste and turn the scored side down. Cover with a weight and cook until deep golden brown and flattened

Add <quantity>½<unit>cup</unit></quantity> of white wine and let it evaporate. Remove from heat

Spread the Mustard & Almond Sauce on a plate and arrange the mushrooms over it

Top it with the Leek Ash. Garnish with microgreens and season with rosemary and garlic olive oil to taste

Finish with edible flowers and flaky salt to taste. The king oyster mushroom & almond sauce is ready

Enjoy this beautiful and delicious meal!