Creamy Tarragon Chicken

Name: Creamy Tarragon Chicken
Prep time: 10 min
Cook time: 20 min
Total time: 30 min
Cuisine: Mediterranean, French, European
Ingredients: 1 to 2 tablespoons olive oil; 4 to 6 small chicken breast fillets; 2 shallots or 1 small red onion, finely chopped; 2 garlic cloves, finely chopped; 160 ml (2/3 cup) dry white wine; 125 ml (1/2 cup) chicken stock; 125 ml (1/2 cup) double cream (heavy whipping cream) or soya cream (see Kitchen Notes); 1 tablespoon cornflour (cornstarch) mixed with 1 tablespoon water; 1 tablespoon fresh tarragon, finely chopped (see Kitchen Notes); parsley, finely chopped; sea salt; freshly cracked pepper