Source: Wikipedia
Condiment
| Recipe Title | Ingredient form | Region | Country |
|---|---|---|---|
| Greek Feta Burgers | onion hamburger bun | Greek | Greek |
| French Onion Burgers | buttered onion hamburger bun | French | French |
| Burgers Stuffed with Blue Cheese | onion hamburger bun | Canadian | Canadian |
| Maple Mustard Pork Burgers | sliced onion hamburger bun | Canadian | Canadian |
| Better -Than-Arby's Roast Beef Sandwiches | onion hamburger bun | South American | Argentine |
| Hot Beef Sandwich Au Jus | onion hamburger bun | South American | Argentine |