Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

In a small bowl, whisk together the flour, baking powder, and salt; set aside., In the bowl of a stand mixer, cream sugar and butter., Beat in the egg, vanilla, and zest (flavouring if using)., Add the dry ingredients, mixing enough to combine., With your hands, knead in enough of the potato starch to make the dough easy to handle., Roll into 2-teaspoon sized balls, pressing your finger in the middle to make a dent., Bake in on a parchment-paper lined sheet in a preheated 350F oven for about 10-13 minutes until very lightly browned., Reinforce the dents with your finger before they cool., Fill the dents with lemon curd once cool., Enjoy!
sweet rice flour, potato starch, baking powder, salt, sugar, butter, egg, vanilla, lemon, drops lemons, potato starch, lemon curd