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A tuna melt on a bagel is a warm, open-faced sandwich featuring tuna salad (typically canned tuna mixed with mayonnaise and seasonings) topped with melted cheese, served on a sliced and toasted bagel. It's a classic comfort food staple in American diners and delis, particularly popular in the Northeastern United States.
This dish is a balanced but calorie-dense meal, providing a good amount of protein from the tuna and cheese, along with fats from the mayonnaise and cheese, and carbohydrates from the bagel. A typical serving can range from 400 to 600 calories, offering nutrients like omega-3s, calcium, and B vitamins.
The tuna melt is a quintessential example of mid-20th century American culinary innovation, blending the convenience of canned tuna with the hearty appeal of a grilled cheese sandwich. Nutritionally, it's a unique hybrid that delivers both the lean protein of fish and the indulgent, melty comfort of a hot sandwich.