Ingredients:
Ginger-Lemon Mayonnaise
- 1 cup mayonnaise
- 2 tablespoons soy sauce
- 2 tablespoons finely chopped cilantro
- 2 tablespoons finely chopped scallion greens
- 1 tablespoon black sesame seeds or toasted sesame seeds
- 2 teaspoons finely grated fresh ginger
- Finely grated zest of 1lemon
- 2 teaspoons fresh lemon juice
- Freshly ground black pepper
Cucumber Salad
- 2 Kirby cucumbers, thinly sliced
- 1/4 medium red onion, thinly sliced
- 3 tablespoons rice vinegar
- 1 tablespoon sugar
- 1 teaspoon kosher salt
- Freshly ground black pepper
Tuna Burgers
- 2 teaspoons finely grated fresh ginger
- 1 garlic clove, smashed
- 1 Thai or serrano chile, seeded and minced
- 1 teaspoon sugar
- 2 tablespoons fish sauce
- 2 tablespoons finely chopped cilantro
- 1 tablespoon finely chopped basil
- 1 1/2 pounds sushi-quality tuna
- 1 1/2 tablespoons vegetable oil
- 1 1/2 teaspoons sesame oil
- 4 hamburger buns
- 2 tablespoons dry-roasted peanuts, finely chopped
Directions:
Make the mayonnaise
In a medium bowl, combine mayonnaise, soy sauce, cilantro, scallions, sesame seeds, ginger, lemon zest and juice, and black pepper. Refrigerate until ready to use.
Make the cucumber salad
In a medium bowl, toss cucumbers, onion, vinegar, sugar, salt, and pepper. Let stand for 1 hour at room temperature.
Make the burgers
In a mortar or medium bowl, using the back of a spoon, mash ginger with garlic, chile, and sugar to a paste. Stir in fish sauce, cilantro, and basil. On a clean cutting board, thinly slice tuna. Stack slices and cut into thin matchsticks. Cut matchsticks into rough cubes, then chop until pieces are roughly 1/8 inch. Add tuna to ginger paste and stir until evenly combined.
Using lightly moistened hands, shape tuna mixture into 4 patties about 1 inch thick. Set them on a large plate lined with plastic wrap. Refrigerate tuna burgers for at least 20 minutes.
Light a grill. In a small bowl, combine vegetable oil and sesame oil. Lightly brush burgers and cut sides of buns with oil. When fire is medium-hot, brush grate with oil. Grill burgers for 6 minutes, turning once, for medium rare. Move burgers away from heat and grill cut sides of the buns until toasted, 1 minute.
Drain Cucumber Salad. Spread Ginger-Lemon Mayonnaise on the cut sides of buns and set tuna burgers on bottoms. Top with the Cucumber Salad and peanuts. Cover burgers with buns and serve.