Whisk together all of the ingredients. Taste and season with salt and pepper, if desired. Thin with a small amount of cold water or buttermilk, if necessary.
Notes
Season the Caesar salad with plenty of extra kosher salt and freshly ground black pepper just before serving. The best salads have well-seasoned dressing, as well as well-seasoned lettuce and other ingredients.
Use full-fat mayo (Duke's is our favorite) for the best flavor and texture.
Freshly-grated Parmesan is best on top of a Caesar salad, but the canned pre-grated stuff works best in the dressing, since it incorporates so well with the other ingredients.
Swap out some of the mayo and use plain Greek-style yogurt instead. It will have a tangier flavor, but will still be rich and creamy.
Make a Caesar salad wrap by rolling the salad with some sliced chicken in tortillas.
Top the salad with chicken, salmon, steak, or shrimp and turn it into a main course.
Add crispy bacon or pancetta to the salad.
While Romaine lettuce is most traditional, you can substitute with other types of lettuce in a pinch. Try a spring mix of baby lettuce leaves or chopped Iceberg.
Don't have a lemon on hand? You can substitute with about 1 tablespoon of bottled lemon juice. You want have the extra flavor from the lemon zest, but it will still be good.