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A submarine sandwich, often called a sub, hero, or hoagie, is a hearty sandwich served on a long, soft roll split lengthwise. It's typically filled with layers of sliced deli meats like turkey or salami, cheeses such as provolone or Swiss, and a variety of fresh vegetables like lettuce, tomatoes, onions, and peppers, often finished with oil, vinegar, or a creamy dressing. This popular sandwich is a staple of American casual dining, with regional names and variations found across the United States.
A standard submarine sandwich is a balanced but calorie-dense meal, providing a good mix of carbohydrates from the bread, protein from the meats and cheese, and fats from the dressings and oils. It can offer key nutrients like iron, B vitamins, and calcium, with a typical 6-inch sub ranging from 400 to 600 calories, while a full 12-inch sub can easily exceed 800 calories.
Culturally, the sub is a fascinating example of American regionalism, with the same sandwich known as a 'sub' in New England, a 'hero' in New York, a 'hoagie' in Philadelphia, and a 'grinder' in parts of New England and the West. Nutritionally, its build-your-own nature allows for significant customization, making it possible to create a relatively healthy, veggie-packed meal or a very indulgent, high-fat and high-sodium feast.