Open-Faced Seared Tuna Burger with Wasabi Mayonnaise
These tuna burgers are best eaten very rare, so buy your sushi-quality tuna from a reputable fishmonger. The fish should be glistening and jewel-toned, with no trace of cloudiness. Wasabi paste, or Japanese horseradish, is distinctive not only for its bright green color, but also for its head-rushing heat. Combined with a little mayonnaise and low-fat sour cream, it becomes a perfect condiment for the tuna burgers. Wasabi is available in powder form, too, and can be mixed into a paste with a little water.
- 1 1/2 pounds sushi-quality tuna, coarsely chopped
- Kosher salt and freshly ground black pepper
- 1/4 cup plus 1 tablespoon low-sodium soy sauce
- 3 tablespoons low-fat sour cream
- 1 tablespoon mayonnaise
- 2 teaspoons wasabi paste
- 4 sourdough rolls, bottoms only
In a medium bowl, combine the tuna, salt and pepper, and 1 tablespoon of the soy sauce, and combine gently. Divide the mixture into 4 equal parts and shape each into a patty. Set aside.
In a small bowl, combine the sour cream, mayonnaise, and wasabi paste. Stir to combine thoroughly and set aside.
Spray a large nonstick skillet with nonstick cooking spray and heat over medium-high heat. Add the tuna burgers and sear for 2 minutes on each side. Remove from the heat, add the soy sauce, return to the heat, and sear for 1 more minute per side.
Place each on the bottom half of each roll, top with a tablespoon of dressing, and serve.