The sandwich is only available for a limited time and features a single grilled Johnsonville bratwurst sausage sliced length-wise and served on the same sesame sandwich bun with yellow(?!) mustard and raw onions.
It should be noted that Johnsonville is headquartered in Wisconsin.
In the states where it is offered, the Bratwurst Sandwich is part of the burger chain's two for $5 Mix & Match deal.
Nutritional Info - Burger King Bratwurst Sandwich (201g)
Calories - 510 (from Fat - 250)
Fat - 28g (Saturated Fat - 5g)
Sodium - 1510mg
Carbs - 47g (Sugar - 8g)
Protein - 20g