Tuna Roast Beef

Method

1. Preheat the oven to 180°C static.
2. Dry the tuna piece thoroughly with paper towels.
3. Rub the tuna with a little extra virgin olive oil.
4. Mix white sesame seeds, black sesame seeds, and optional poppy seeds in a bowl.
5. Coat the tuna evenly on all sides with the sesame mixture.
6. Heat a large pan over medium-high heat and sear the tuna for 1 minute on each of the four sides.
7. Place the seared tuna on a baking sheet lined with parchment paper.
8. Increase oven temperature to 200°C and bake the tuna for 5-6 minutes, until the internal temperature reaches 36-38°C (or until the center is still pink).
9. Remove the tuna from the oven and let it rest for 2 minutes.
10. While the tuna rests, prepare the citrus mayonnaise: In a tall jar, combine 2 eggs, 400 ml peanut oil, lemon juice, orange juice, lemon zest, orange zest, and a pinch of salt. Using an immersion blender, blend starting from the bottom until emulsified.
11. Slice the tuna thinly against the grain.
12. Arrange the tuna slices on a serving platter.
13. Pipe or spoon the citrus mayonnaise over the tuna.
14. Garnish with fresh basil leaves and a drizzle of raw extra virgin olive oil if desired.