Sauce
Start by cutting the salmon - first make shallow diagonal cuts on it then do the same cuts in the opposite direction.
Next, cut it into 4 equal pieces.
In a large skillet over medium to low heat, add the unsalted butter and stir until fully melted.
Add a drizzle of vegetable oil and stir until combined.
Add the salmon pieces we cut earlier and fry them until golden on both sides.
Remove them from the skillet and set aside.
In another skillet over medium to low heat, add a drizzle of olive oil.
Add the onion cut into strips, the crushed garlic cloves, the pepper cut into strips, the mushrooms cut into smaller pieces and sauté until lightly golden brown.
Season with the salt and a pinch of black pepper.
Add the spinach leaves, the water, stir it to combine and let it all cook for 5 minutes.
In a medium bowl, add the egg yolks, the melted butter, the milk, the lemon juice and mix everything very well until combined.
Season with the sweet paprika, a pinch of black pepper and mix to combine.
Add this mixture to the skillet with the sautéed ingredients and stir.
Next, add the lemon cut into slices and the fried salmon pieces.
Cover the skillet and let everything cook for another 5 minutes.
Serve.