Method:
Place tea bags in a teapot or glass container. Bring 2 cups water to a boil. Remove from heat and let cool for 2 or 3 minutes. Pour hot water over tea bags, cover and steep tea for 1 minute. Remove tea bags from water. Add garlic, ginger, lemon, tamari and mirin to tea and set aside. In a small bowl, dissolve arrowroot powder in 2 tablespoons water. Set aside.
In a large skillet, heat canola oil over medium heat. Add salmon and sear for 2 minutes, or until browned. Flip salmon and add tea mixture to skillet. Bring to a boil. Reduce heat, cover, and simmer gently for 8 to 10 minutes, or until center of salmon is opaque and flakes easily. Remove salmon to a plate, season lightly with salt and pepper and tent with foil to keep warm. Add dissolved arrowroot to poaching liquid and bring to a boil, stirring constantly, until slightly thickened, 1 to 2 minutes. Strain liquid into a small bowl. Drizzle strained liquid and sesame oil over salmon and garnish with green onions.