Which popular appetizer is known for its unique preparation involving onions?

The Blooming Onion is the appetizer known for its unique preparation involving onions. This iconic dish features a large, whole onion that is meticulously cut to resemble a flower before being battered and deep-fried. The preparation method allows the petals of the onion to open up, creating a visually striking presentation and a deliciously crispy exterior. It is typically served with a signature dipping sauce, enhancing the flavor profile and making it a popular choice among guests. The combination of flavors and the dramatic appearance make the Blooming Onion a standout item on the menu, celebrated for its creativity and taste.