Pat the pork tenderloin dry with paper towels.

Season all sides generously with salt.

Preheat the air fryer to 400°F (200°C) for 3 minutes.

Brush the pork tenderloin with 1 tablespoon of lard.

Place the tenderloin in the air fryer basket.

Cook at 400°F (200°C) for 10-12 minutes, turning halfway through, until the internal temperature reaches 145°F (63°C).

Remove from the air fryer, cover with foil, and let it rest for 5 minutes before slicing.

While the pork rests, heat the remaining 1 tablespoon of lard in a small saucepan over

Remove from heat and stir in the unsalted butter until melted and the sauce is glossy.

Slice the rested pork tenderloin into medallions.

Drizzle the reduction over the slices and serve immediately