Using a sharp knife, make 4 to 6 slices in each turkey thigh and place a garlic bulb into each. Coat the turkey thighs with olive oil.
Brown turkey thighs on both sides in oil in an oven-safe saucepan over medium heat for 10 minutes. Season with salt and pepper.
In the saucepan, combine the soy sauce, honey, herbs, ginger, bouillon cube, and one cup water; cover and cook for 5 to 7 hours on low heat. You may do this step in a slow cooker.
Preheat the oven to 250°F (120°C). After cooking, drain the turkey thighs and place them in a roasting pan. Collect the cooking fluids and reduce in the saucepan until they reach a syrupy consistency.
Coat turkey thighs on both sides with the reduced cooking liquids and roast for 10 to 15 minutes, basting often. Meat should be caramelized, nearly candied, shiny, and lacquered. Sprinkle with more cilantro and spring onions. Enjoy!