Recipe Trolley | Mustard Chicken with Mushrooms and Leeks

Ingredients

• 600 g chicken breast
• 1/2 tsp sea salt flakes
• 1/2 tsp black pepper
• 1 tbsp olive oil
• 2 shallots, peeled, finely sliced
• 2 leeks, cleaned, cut into 4cm slices
• 200 g chestnut mushrooms, wiped and sliced
• 2 garlic cloves, minced
• 200 ml white wine
• 400 ml chicken stock
• 4 tsp dijon mustard
• 150 ml crème fraîche
• 2 tbsp tarragon