"This Polish lemon tart recipe or tarta cytrynowa (TARR-tah sih-trih-NOH-vah) is made with a little cake flour but primarily almond flour. Almond flour is actually just almonds that have been finely ground until it makes a meal. It is the same type of flour that is used to make French macarons. You can buy it or make your own. Here is a video that shows how to make your own almond flour/meal. If almond flour is substituted for the cake flour and pareve margarine is subsituted for the butter in this recipe, this lemon tart would be an ideal Passover dessert. The batter for this tart forms its own crust and white chocolate gives it an added dimension. The juice and zest from two large lemons makes it very moist and bursting with fresh citrus flavor. Here's a larger photo of Polish Lemon Tart...."