INGREDIENTS
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2 pepperoncini or hot cherry peppers, finely chopped
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2 cups chopped giardiniera
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2 tablespoons Italian hot spread sauce (such as Tutto Calabria)
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1 teaspoon crushed dried oregano, plus more for serving
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Kosher salt, freshly ground pepper
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1 red onion, very thinly sliced
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Mayonnaise (for rolls)
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8 6–9-inch soft Cuban, hero, or hoagie rolls, split lengthwise
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2 pounds assorted cured meats, such as prosciutto cotto, mortadella, coppa, hot soppressata, and/or Genoa salami, thinly sliced
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1/2 pound provolone cheese, thinly sliced
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1 head of iceberg lettuce, shredded
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Red wine vinegar and olive oil (for serving)