Tuna Burgers with Carrot-Ginger Sauce

Ingredients:
For Sauce:
1 small carrot, roughly chopped
1 1/2-inch piece ginger, peeled
2 tablespoons rice wine vinegar
1 tablespoon toasted sesame oil
1 tablespoon low-sodium soy sauce
Pinch of sugar
Kosher salt and freshly ground pepper

1 lb fresh tuna
2 Tbsp plus 1 tsp extra virgin olive oil
2 Tbsp low-sodium soy sauce
juice of 1/2 lime
1/4 cup chopped cilantro
1 Tbsp grated fresh ginger
kosher salt and freshly ground pepper
1 tsp hot sauce (Sriracha) mixed with 1 Tbsp Mayonnaise (optional)
1 cup alfalfa sprouts
4 whole-grain hamburger buns
1/2 avocado, sliced

Prepare the sauce: Pulse the carrot and ginger in a food processor until finely chopped. Add the vinegar, sesame oil, soy sauce and sugar and process until smooth. Drizzle in 2 tablespoons water and combine; season with salt and pepper. Transfer the sauce to a bowl and set aside.

Chop tuna into chunks. Place in food processor and pulse a few times to break up into pieces. In a bowl, mix 2 Tbsp olive oil, soy sauce, lime juice, cilantro and ginger; season with salt and pepper. Pour over the tuna and process until well blended. Form into 4 patties; brush each lightly with the remaining 1 tsp olive oil.

Preheat a grill or grill pan. Once hot, add the burgers and cook for 2 minutes on each side for rare, or to desired doneness. Toast burger buns; smear spicy mayo on one side and place burger on top. Top with avocado and sprouts.