To accurately gauge where the Sourdough Jack stands, we compared it against the chain's current menu stalwarts across build specs, prices, and nutritional profiles.
| Burger Name | Bun & Patty Specifications | Signature Toppings & Cheeses | Calories & Est. Price (2026) |
|---|---|---|---|
| Sourdough Jack | Toasted round sourdough; single quarter-pound beef patty | Hickory smoked bacon, tomato, melted Swiss-style cheese, signature burger sauce | 660 kcal | $7.49 |
| Jumbo Jack | Toasted bakery bun; single jumbo beef patty | Lettuce, tomato, pickles, chopped onions, real mayonnaise (American cheese optional) | 520 kcal | $4.49 |
| Bacon Ultimate Cheeseburger | Toasted bakery bun; two quarter-pound beef patties | Three slices bacon, American cheese, Swiss-style cheese, real mayonnaise, mustard | 930 kcal | $8.29 |
| Double Jack | Toasted bakery bun; two jumbo beef patties | Two slices American cheese, lettuce, tomato, pickles, chopped onions, mayo-onion sauce | 830 kcal | $7.19 |
| Classic Smashed Jack | Brioche-style bun; quarter-pound crispy-edge smashed patty | American cheese, grilled caramelized onions, thick-cut pickles, Boss Sauce | 710 kcal | $7.89 |
| Jr. Bacon Cheeseburger | Plain regular bun; single junior beef patty | Hickory smoked bacon, American cheese, ketchup | 410 kcal | $2.69 |
