In a bowl, work the flour and diced butter to get a sandy mixture using your fingertips. Add 5 ml water, mix and shape into a ball. Flour and save in the fridge for 30 minutes.
Grind 50g pistachios. In a bowl, mix the sugar and egg yolk until frothy. Add the ground almonds and pistachios, orange blossom water then add the cream.
Preheat the oven to 180° (gas mark 6). Butter a cake pan and garnish with the dough. Pour the pistachio mixture and bake for 45 min. Allow to cool.
Remove from mould and garnish with raspberries and pistachios. Serve immediately.