Step 1

To make buttermilk dressing, combine ingredients in a small jug and season to taste.

Step 2

Combine fennel seeds, pepper and oil in a large bowl; season. Add pork; turn to coat. Cook pork on a heated grill plate (or grill or barbecue), turning occasionally, for 5 minutes or until cooked through. Transfer to a plate; cover loosely with foil, rest for 5 minutes.

Step 3

Arrange radicchio, fennel, apple, pecans and pork on a serving platter; drizzle with dressing. Sprinkle with parmesan and extra tarragon.