Neroli Pichy's Pork belly with pickled apple and walnut salad

Name: Neroli Pichy's Pork belly with pickled apple and walnut salad
Prep time: 20 min
Cook time: 2 h
Total time: 2 h
Yield: 4 portions
Ingredients: 1 green apple; 200 g water; 80 g white wine vinegar; 80 g caster sugar; 3 juniper berries; ½ tsp whole black peppercorns; 1200 g pork belly meat, boned; 10 fresh sage leaves; 5 sprigs fresh thyme; 1 - 2 tsp sea salt flakes; 1500 g water; 2 tsp fennel seeds; 1 tsp juniper berries; ½ tsp whole black peppercorns; 8 new baby potatoes; 8 pickling onions; 80 g walnut halves; 3 tsp caster sugar; 1 egg white; 2 pinches ground black pepper; 300 g red cabbage; 30 g extra virgin olive oil; 20 g white wine vinegar; ½ tsp Dijon mustard; walnuts