Using a large sharp chef's knife, slice off the bottom of the fennel. Then, thinly slice the bulb up until the stalks turn to fronds. Reserve about 2 tablespoons of the fronds.
Place the fennel and the 2 tablespoons of fronds in a large serving bowl.
Add the orange, lime and sliced serrano peppers. Toss to combine.
In a small bowl or jar combine the olive oil, white balsamic vinegar and lime zest. Whisk or (if in a jar with lid) shake to combine.
Drizzle the dressing over the salad and toss to combine. Finish by sprinkling the flaked sea salt on top.
Notes
Store the leftovers in an airtight container in the refrigerator for up to 4 days.How to 'supreme' an Orange
Using a sharp knife but the peel of each end of the orange
Slice under the peel on the sides of the orange using the contour of the orange as a guide
Once the peel is cut away cut the orange into segments.
This allows the flesh of the orange to be exposed versus pulling the orange into segments.