Pre-heat to 170°C.
Olive oil (2 tbp)
Heat in pan on moderate heat.
Smoked gammon (100g in 1cm pieces)
Fry for a couple of minutes until lightly browned.
Leeks (150g in thin slices)
Add to pan and fry until leeks are soft but not coloured.
Cooked chicken thighs (300g in 1 cm pieces)
Double cream (120 ml)
Chicken stock (100 ml)
Tarragon (3tsp dried)
Black pepper (1tsp ground)
Add and stir.
Simmer for 5 minutes
Remove from heat and allow to cool in refrigerator.
Short crust pastry (400g)
Use two thirds to line 20 cm flan dish.
Place chicken mixture in dish. Use remaining pastry to cover.
Egg (1 beaten)
Brush top with egg.
Place in oven and cook for 45 minutes.
Turn out & serve.
Serve with lots of buttery mash.