Sprinkle the foie gras with salt and pepper. Put a frying pan on high heat. When hot, place the foie gras on one side and fry for 1 minute until browned.
Prepare the sauce. Rinse and peel the ginger with a spoon and cut into small cubes. Peel and finely chop the chili pepper, onion, garlic and coriander
Cut the tomatoes and mozzarella into thin slices of the same thickness. Arrange the tomato and mozzarella slices interspersed with each other
Preheat the oven to 180˚C. Whisk the egg yolks with a whisk and mustard. Stir in the olive oil until smooth.