6 thinly sliced green onions (about 2/3 cup), divided
1/2 cup plus 2 tablespoons chopped fresh cilantro, divided
3 tablespoons lower-sodium soy sauce
1 teaspoon grated fresh ginger
2 teaspoons sugar
1/2 teaspoon Sriracha (hot chile sauce, such as Huy Fong)
1 cup matchstick-cut cucumbers
1 cup matchstick-cut carrots
2 cups hot cooked brown rice
8 Bibb lettuce leaves
To prepare sauce, heat a small saucepan over medium heat. Add canola oil to pan; swirl to coat. Add shallot, and sauté for 2 minutes. Add 1/3 cup water and next 3 ingredients (through red pepper), and stir with a whisk. Bring to a boil; cook 1 minute. Remove from heat; stir in lime juice.
Heat a large nonstick skillet over medium-high heat. Add sesame oil to pan; swirl to coat. Add 1/3 cup green onions; sauté 1 minute. Add ground turkey; sauté until browned, stirring occasionally. Add 2 tablespoons cilantro, soy sauce, ginger, sugar, and Sriracha; sauté 1 minute. Remove from heat; stir in cucumbers, carrots, and remaining green onions.
Spoon 1/4 cup rice into each lettuce leaf. Top with about 1/2 cup meat mixture; sprinkle with 1 tablespoon cilantro. Serve with sauce.