1 cup Plain (All Purpose) Flour (Gluten-free flour can be used as a substitute.)
1/4 cup Icing (Powdered) Sugar (Granulated sugar can be used, but texture may vary.)
1/2 cup Unsalted Butter (Margarine works too, but flavor will differ.)
1 cup each Egg Yolk (Whole eggs can be used, but they might change texture.)
2–3 tbsp Cold/Iced Water (Essential for dough texture.)
1/2 cup Granulated Sugar (Alternative sweeteners can be used, but will alter taste.)
2 tbsp Cornflour (Cornstarch) (Arrowroot powder is a good substitute.)
1/4 tsp Salt (Enhances flavor.)
1/2 cup Lemon Juice (Can swap with lime or orange juice.)
2 tbsp Water (Adjusts consistency.)
2 cup each Egg Yolks (Whole eggs can be a substitute, but might reduce richness.)