Lemon tarts are one of my favorite desserts and invoke childhood memories of visiting Calcutta and having tea at the Calcutta Club. Later trips were met with lemon tarts from Kookie Jar which served little tarts that were impossible to find in the States when I was young. A classic lemon tart is probably both my mother's and father's favorite dessert. They are buttery and silky, bursting with citrus flavor and perfectly sweet with a shortbread crust. Over the years I've tried a few recipes but am now settled on Cook's Illustrated which is essentially flawless (once I cut back on the sugar). Of course no two lemons are created equal and the quality of your lemons are essential.