1 large fennel bulb, fronds reserved 2 cups (60 g) watercress, loosely packed 1 Persian cucumber, thinly sliced 4 radishes, thinly sliced 1 large orange, segmented 1 small ripe avocado, sliced 2 tbsp (30 g) pistachios, toasted and roughly chopped 1 tbsp fennel fronds, chopped 3 tbsp (45 ml) extra-virgin olive oil 2 tbsp (30 ml) fresh lemon juice 1 tsp Dijon mustard 1 tsp honey 1 tbsp finely minced shallot 1 tbsp capers, rinsed and chopped 1 / 2 tsp lemon zest 1 / 4 tsp lightly crushed fennel seed (optional) 1 / 4 tsp kosher salt, plus more to taste Freshly ground black pepper, to taste Flaky sea salt, for finishing
Toast pistachios in a dry skillet over medium heat until fragrant, 2–3 minutes; cool and roughly chop. Make the vinaigrette: In a bowl, whisk lemon juice, Dijon, honey, shallot, capers, lemon zest, crushed fennel seed (if using), kosher salt, and pepper. Slowly whisk in olive oil until emulsified. Prep the vegetables: Trim fennel and reserve fronds. Using a mandoline or sharp knife, shave the fennel bulb very thin. Thinly slice cucumber and radishes. Chop reserved fennel fronds. In a large bowl, combine watercress, shaved fennel, cucumber, and radishes. Add about half the vinaigrette and toss gently to coat. Arrange the salad on a platter. Tuck in the orange segments and avocado slices. Sprinkle with pistachios and chopped fennel fronds. Drizzle with remaining vinaigrette. Finish with a pinch of flaky sea salt and a few grinds of black pepper. Serve alongside the halibut.
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