Combine stock, rind, ginger, garlic, star anise and peppercorns in a large saucepan over medium heat, simmer to infuse (30 minutes).
Add turkey, simmer for 20 minutes, then remove from heat and stand in liquid for 30 minutes.
Preheat grill to high.
Remove turkey from poaching liquid, pat dry with absorbent paper, place on a baking tray, brush with 5.3 oz vino cotto, then grill, basting occasionally, until golden (5-7 minutes). Season to taste, cover loosely with foil, set aside to rest (10 minutes).
Meanwhile, blanch green beans and sugar snap peas in boiling salted water, then refresh. Drain and combine in a bowl with peaches and rocket.
Whisk oil, vinegar and mustard in a small bowl to combine, toss through bean mixture.
Serve salad with sliced turkey and remaining vino cotto drizzled over.