This is a recipe for baked cream infused with citrus, wrapped in a crumbly pastry crust. It is the kind of tart that reminds me of wandering through Paris without a purpose. Envision narrow streets filled with cafés spilling out onto the sidewalk . . . . . . bookstore window-shopping and artfully arranged pastry shops worthy of a starring role in a romantic movie . . . . . . and you are at the exact place that inspired this dessert.