Which ingredient is not commonly found in classic Caesar salad?

While it might seem counterintuitive, the traditional Caesar salad doesn't actually use lettuce. It's made with romaine lettuce, which is a specific type of lettuce with a heartier texture and a slightly peppery flavor.

Here's a breakdown of the classic Caesar salad ingredients:

* Romaine lettuce

* Croutons

* Parmesan cheese

* Caesar dressing (made with olive oil, egg yolks, lemon juice, garlic, Dijon mustard, anchovies, and Worcestershire sauce)

* Black pepper

So, while lettuce might be a common salad ingredient, it's not a staple in the Caesar salad.