For the pastry,
sift the flour and salt into a bowl. Add the butter
and fat and rub in until the mixture resembles
coarse breadcrumbs. Stir in just enough water to
bind the pastry. Form into two balls, wrap and chill
for 20 minutes.
Preheat a baking
sheet in the oven at 220'C/425"F/Gas 7. Roll out a
pastry ball and use to line a 23cm/9in pie dish.
Halve and stone
the plums, and chop roughly. Mix all the filling
ingredients together, then transfer to the pastry
case.
Roll out the
remaining pastry, place on a baking sheet lined with
greaseproof paper, and stamp out four hearts.
Transfer the pastry lid to the pie using the paper.
Trim to leave a
2cm/3/4in overhang. Fold this under the pastry base
and pinch to seal. Arrange the hearts on top. Brush
with milk and bake for 15 minutes. Reduce the heat
to 180/350F /Gas 4 and bake for a further 30-35
minutes.