Flaky, all-butter golden pastry filled with a delicately spiced sweet filling, baked until crisp and aromatic.
Boil the sugar, water, and lemon juice until the temperature reaches 115C on a thermometer.
Slightly warm the tahini in a large bowl so it is pourable but not hot.
Slowly stream the syrup into the tahini while beating continuously.
As the mixture thickens and turns grainy, beat and fold until it pulls away from the bowl in strands.
Press into a loaf pan with half the pistachios scattered through, and smooth the top.
Rest for 2-3 hours until firm, then cut into thin slices and top with the remaining pistachios.