Recipe video above. Also known as Parisian Flan, this traditional French custard tart is the most magnificent custard tart in the world (in my humble opinion!). It's like a giant Portuguese Tart - but better, because there's so much more custard!The custard is truly incredible - rich, creamy, but not overly sweet. Sets perfectly to cut neat slices but melts in your mouth.DO NOT BE DAUNTED by the lengthy looking instructions. At its core, it is just a puff pastry crust filled with custard. Details are provided to ensure there's enough information even for less confident bakers.(And PS, it's SUPPOSED to look rustic!)At its best in the 24 hours after 12 hours refrigeration after finished custard comes out of oven (crispiest base). Keeps 4 - 5 days but pastry starts to lose crispiness (it's still AWESOME though!).My typical workflow: Make custard and line pan with pastry in evening. Bake in morning, fridge all day, serve that evening. Or bake in early evening, fridge overnight, serve the next day.