What condiment is essential in a New Orleans muffuletta sandwich?

Olive salad is essential in a New Orleans muffuletta sandwich. It is the sandwich’s signature spread, balancing rich cured meats and cheese with briny, tangy, herby flavors.

The muffuletta was created in New Orleans by Sicilian immigrant Salvatore Lupo at Central Grocery around 1906. The round sesame loaf is layered with mortadella, salami, ham, Swiss cheese, provolone, and marinated olive salad.

The salad commonly combines chopped green and black olives with olive oil, celery, cauliflower, carrots, peppers, onions, capers, garlic, herbs, and vinegar. Its ingredients resemble those found in giardiniera, though recipes vary by shop.

Mustard, mayonnaise, and pesto may appear in modern sandwich variations, but they are not defining ingredients of the traditional muffuletta. Muffulettas are often served cold, though many New Orleans vendors toast them.