Chicken Roulade with Prosciutto and Cheese

Name: Chicken Roulade with Prosciutto and Cheese
Prep time: 40 min
Cook time: 1 h 5 min
Total time: 1 h 5 min
Yield: 4 portions
Ingredients: 1 tbsp dried tarragon; 1 tsp ground black pepper; ½ tsp salt; ½ oz lemon peel; 6 oz mascarpone cheese; 4 chicken breasts, air-chilled, boneless and skinless; 8 slices prosciutto; 2 oz baby spinach; 3 oz shallots; 1 oz unsalted butter; 6 oz white wine; 10 oz chicken stock; 1 tsp dried tarragon; 1 tsp Dijon mustard; 12 oz fingerling potatoes; ¼ tsp salt; 3 tbsp all-purpose flour; 2 oz heavy whipping cream