French Onion Swiss Mushroom Burger Au Jus at The Duke’s

August 1 - August 31

Experience a gourmet burger unlike any other with The Duke’s latest special. Featuring freshly ground imported beef, this premium burger is topped with Swiss cheese, sautéed mushrooms, grilled onions, and horseradish mayonnaise, and served with a rich, flavorful Au Jus dipping sauce for the perfect finishing touch.

Priced at just 265 Baht, this limited-time special is available from 1–31 August 2026 at all five The Duke’s locations.

Don’t miss the opportunity to enjoy a burger crafted to deliver exceptional flavor in every bite.