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Built on Jack in the Box's Breakfast Jack format, this sandwich stacks a seasoned pork sausage patty, a fried egg, and a slice of American cheese on a sesame seed bun. The sausage brings black pepper, sage, and other spices, while the egg is cooked flat-top and the cheese is melted on top of it. Compared with the Bacon Breakfast Jack, this version swaps in sausage for a thicker, heavier filling. It's one of the core Breakfast Jack choices on the morning menu, alongside the plain and bacon versions, and it's sold during breakfast hours.