RHUBARB Pie WITH PISTACHIOS AND ROSE WATER

Preparation

For the bottom layer:
Beat sugar with egg yolk and add water. Sieve the flour and rub butter into it using your hands to make shortcrust pastry. Add the egg-sugar mixture, knead into a ball and wrap in plastic wrap. Let it rest for 1 hour in the refrigerator. Preheat the oven to 170 °C. Grease a rectangular baking tin. Roll out the dough and put it in the baking tin.
Make the pistachio filling:
Mix all ingredients together and place it on the bottom of the baking tin.
Make the rhubarb:
Wash the rhubarb stalks and cut them to the size of the baking tin. Take a deep saucepan and bring wine with sugar and rose water to boil. Poach the rhubarb for about 3 minutes (depending on the thickness of the stems). Take the rhubarb out and place it over the filling.
Put the cake in the oven for 25-30 minutes.
Let the wine reduce further to a syrup.
Remove the cake from the oven and brush with the syrup.
Let it cool and serve with chopped pistachio nuts and some rose petals.