Chicken with Mashed Potatoes and Gravy

Name: Chicken with Mashed Potatoes and Gravy
Prep time: 25 min
Cook time: 1 h 10 min
Total time: 1 h 10 min
Yield: 6 portions
Ingredients: 30 g Parmesan cheese; &frac18; tsp black peppercorn; 85 g panko breadcrumbs; 1 tbsp parsley, dried; 170 g Greek yoghurt; 30 g tomato purée (concentrate); 1 tsp paprika; 1 tbsp onion powder; 1 tbsp garlic powder; 1 tbsp parsley, dried; 30 g lemon juice; 30 g extra virgin olive oil; 1 ½ tsp salt; 850 - 995 g chicken breast fillet, skinless; 680 g chicken stock; 680 g floury potatoes; 30 - 60 g butter, unsalted; 60 g milk; 30 g butter, unsalted; 30 g all purpose white flour; 2 tsp soy sauce; salt; black pepper, ground