- 
					  Roll three quarters of a block 
					  of pastry to about 2mm on a floured surface and use to 
					  line a shallow 22 cm round loose bottomed tin, leaving a 
					  slight overhang (if the pastry is too thick your pie will 
					  have a soggy bottom) Pop the tin in the freezer. 
- 
					  Halve the vanilla pod 
					  lengthways and scrape the seeds into a large bowl. Add the 
					  ricotta, the 3 eggs, sugar and orange zest; stir to 
					  combine. 
- 
					  Remove the tin from the 
					  freezer, cover the pastry with a thin layer of jam, then 
					  spread the ricotta mixture on top. 
- 
					  Halve the plums and cut into 
					  thin half moons, then arrange neatly on top of the 
					  ricotta. 
- 
					  Roll out the other quarter of 
					  pastry and cut into thin strips. Use these to create a 
					  lattice top for your pie. Beat the remaining egg, use to 
					  brush the pastry and sprinkle with a little caster sugar. 
- 
					  Chill for 1h. Preheat the oven 
					  to 200C/Fan 180Cgas 6. Heat a baking tray on the lowest 
					  shelf of the oven and cook for 10 mins, then reduce the 
					  temperature to 170C/fan 150C/gas 3 and cook for a further 
					  50 mins until the filling is firm and the pastry is 
					  golden. 
- 
					  Leave to cool for 3 hours then 
					  remove from the tin.