Wallenbergare with tarragon cream sauce - Good Food Middle East

Ingredients

• 250g veal or pork mince
• 1 small onion, coarsely grated
• 1 medium egg yolk
• 1 tbsp capers, rinsed and roughly chopped
• 75ml double cream
• 50g fine dried breadcrumbs
• 2 tsp mustard powder
• 25g butter
• small bag watercress, to serve
• 100ml white wine
• 50ml full-fat milk
• 50ml double cream
• ½ tsp light soy sauce
• ½ chicken stock cube
• small bunch tarragon, roughly chopped
• 1 tsp cornflour, mixed with 1 tbsp water