Use the best quality lamb you can find. Chilling the de boned loin in the freezer for 15 minutes will make it easier to handle.
Cut loin from rack of lamb; discard bones or reserve for another use. Trim any silver skin from meat; discard. Cut meat into ¼”-thick slices. Stack two or three slices and cut into ¼”-thick strips, then crosswise into small cubes. Place meat in a medium bowl and press plastic wrap directly onto surface of meat; chill until ready to serve.
Just before serving, combine lamb, capers, mint, preserved lemon peel, and shallot in a large bowl; season with salt and pepper and mix gently to combine.
Divide tartare between 2 plates and top each with an egg yolk. Drizzle with oil, squeeze lemon juice over, and sprinkle with more salt. Serve with toast.
2 servings
* The % Daily Value (DV) tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.