This refreshingly tangy dessert pie is prepared in a 9-inch springform pan. The delicate crust is sweetened with lemon drops, and the light lemony filling is topped with whipping cream sprinkled with lemon drop sugar.
For the crust, ensure lemon drops are very finely crushed; a food processor is ideal. Press the crust firmly and chill adequately to prevent crumbling. When preparing the mousse, use impeccably clean bowls and whisks for whipping egg whites to achieve stiff, stable peaks; this is critical for the mousse's light texture. Fold the egg yolk mixture and whipped cream into the whites very gently to maintain aeration. Freshly squeezed lemon juice and finely minced zest are paramount for vibrant flavor. The lengthy freezing time is non-negotiable for the mousse to set correctly. For the final decorative touch, ensure the reserved lemon drop candy is finely crushed for an elegant sprinkle, and use a pastry bag with a star tip for a professional finish on the whipped cream.