Combine first 7 ingredients in a bowl; stir with a whisk until blended.
Heat oil in a large nonstick skillet over medium-high heat. Add turkey and garlic, and stir-fry 3 minutes or until turkey is done. Add rice, and stir-fry 2 minutes. Remove mixture from skillet; keep warm.
Add vinegar mixture to skillet; bring to a boil, and cook 3 minutes. Return turkey mixture to skillet, and stir-fry 1 minute. Remove from heat; stir in 1/4 cup chopped green onions and peanuts. Garnish with sliced green onions, if desired.