Classic lemon tart recipe with tricks to a perfect smooth tart shell—key lime pie

Lemon tart, or more accurately, lime and orange tart: When you bite into this tart, the creamy lemon custard hits your palette first, followed immediately by the buttery, crisp shortcrust pastry. The lime custard is as tart as it is sweet—it makes your face pucker at the first bite and jolts your senses into attention! With every subsequent bite you grow accustomed to the sourness. You start appreciating the contrast of the creaminess and the crunchiness, as well as the fragrance of the citruses—lime and orange in our case. Follow this recipe and you will be gifted with a tart better than anything you can buy from a shop—that is because the tarts sold in most pastry shops in India are made to have longer shelf lives, and they skimp on the butter. They also rarely bake the custard in the shell, choosing instead to make it separately and pipe it in once cool. It certainly makes for a more substantial (and impressive) presentation to serve one large tart to your guests and cut it into wedges at the table, than