Prepare the Fennel: Thinly slice the fennel bulb and place it in a large salad bowl.
Add Mandarins: Peel and segment the mandarins, keeping the juice aside. Add segments to the bowl with fennel.
Make Dressing: In a small bowl, whisk together mandarin juice, olive oil, white wine vinegar (or lemon juice), salt, and pepper.
Assemble the Salad: Toss fennel and mandarin segments with the dressing. Sprinkle chopped chives and mandarin zest over the top.
Add Burrata: Tear or slice the burrata and place it on top of the salad. Drizzle any remaining dressing over the cheese.
Serve: Serve immediately as a light appetizer or side dish.
