Steamed Turkey Breast with Ricotta, Spinach and Walnut Filling

Name: Steamed Turkey Breast with Ricotta, Spinach and Walnut Filling
Prep time: 15 min
Cook time: 2 h
Total time: 2 h
Yield: 4 portions
Ingredients: 150 g fresh spinach leaves; 1 garlic clove; 10 g Parmesan cheese; 50 g walnuts, shelled, halved; 6 fresh basil leaves; 125 g fresh ricotta cheese; ½ tsp sea salt; &frac18; tsp ground black pepper; 700 - 800 g turkey breast, skin on, boneless; 6 - 9 slices Parma ham; 1300 g water