Roll out the pastry on a lightly floured working surface, and use to line an
Pour the evaporated milk into a mixing basin, add the sugar and lemon juice and stir well to mix. Pour into the baked pastry case. Replace in the centre of a moderate oven (180°C., 350°F., Gas Mark 4) and bake for 30 minutes. Remove from the oven and allow to stand for 15 minutes to set firm. Serve warm or cold with cream.