Famous New Orleans Muffuletta Sandwich

Ingredients

• 1 cup pimiento-stuffed olives, chopped
• 3/4 cup olive oil
• 1 celery rib, finely chopped
• 1/2 cup sliced pepperoncini, chopped
• 1/2 cup pitted Greek olives, chopped
• 1/4 cup cocktail onions, drained and chopped
• 1/4 cup red wine vinegar
• 2 tablespoons capers, drained
• 3 garlic cloves, minced
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 3/4 teaspoon pepper
• 1/2 teaspoon kosher salt
• 1/2 teaspoon celery seed
• 1 round loaf (1 pound) unsliced Italian bread
• 1/2 pound thinly sliced Genoa salami
• 1/2 pound thinly sliced deli ham
• 1/2 pound sliced mortadella
• 1/2 pound sliced Swiss cheese
• 1/2 pound sliced provolone cheese