Krystal from the US

The Buttery Jack was a huge success. People went crazy for a burger with melted garlic butter.

Now, here's the sequel, with Portobello mushrooms.

Oh yeah, that's Jackson's Portobello Mushroom Butter and Jack.

The sequel to the classic and the bacon and Swiss.

Topped with the same melted garlic butter, plus portobello mushrooms and grilled onions.