Butterscotch cream pie

6-8 oz rich shortcrust pastry
For filling
2 oz bitter
4 oz dark brown sugar
1/4 pint boiling water
2 tbs cornflour
1 tbs flour
large pinch salt
1/2 pint milk
2 egg yolks beaten
2 drops vanilla essence

8 inch diameter flan ring

Method
1) line the flan ring with pastry, blind bake and chill cooked flan case
2) melt butter and when golden brown add the brown sugar, stir until foaming and boil for 2-3 mins
3) remove from heat and stir in boiling water
4) place the cornflour, flour and salt in a saucepan and mix to a smooth paste with the milk, then add the brown sugar mixture
5) stir over gentle heat until boiling and cook for 1 minute
6) pour half the mixture on the beaten yolks, return mixture to the pan and continue to cook for 1 minute, add vanilla essence
7) pour the mixture into the baked pastry flan and chill flan.