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.

Place limeade, lemonade, powdered sugar and egg whites in blender., Blend until smooth and frothy., Add cracked ice gradually to thicken. Add enough club soda to cut tartness to your taste., Pour into prepared chilled glasses (rimmed with salt, if desired). This is done by going around the top of the glass with a lime wedge and then dipping the rim into a plate of coarse salt to coat., Yields 6 to 8 servings.
frozen lemonade, frozen limeade, powdered sugar, egg whites, soda water, lime slices, salt