Multi-choice problem: Choose from the options at the end, and answer how do you do this: To make aioli.

Available choices:
--To make aioli Whisk the shell of an egg using a stand mixer with the whisk attachment, and gradually drizzle in half a cup of vegetable oil, drop by drop at first, until aioli is thickened and smooth. Whisk in your flavourings of choices, and season with salt to taste..
--To make aioli Whisk the yolk of an egg using a stand mixer with the whisk attachment, and gradually drizzle in half a cup of vegetable oil, drop by drop at first, until aioli is thickened and smooth. Whisk in your flavourings of choices, and season with salt to taste..
To make aioli Whisk the yolk of an egg using a stand mixer with the whisk attachment, and gradually drizzle in half a cup of vegetable oil, drop by drop at first, until aioli is thickened and smooth. Whisk in your flavourings of choices, and season with salt to taste.