Please choose the correct solution to the question: To make aioli.

Solution1: 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.

Solution2: 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.

Answer format: solution1/solution2
Answer: solution2