Dice your garlic and add it to a small saucepan over medium heat with orange juice, tamari, vinegar, honey, and ground ginger. Bring your sauce up to a boil and stir in the cornstarch slurry. Simmer until thickened, stirring occasionally (cornstarch will start to thicken sauce once it reaches 295°F).
2 cloves garlic, ¼ cup fresh-squeezed orange juice, 2 tablespoons tamari, 1 tablespoon rice vinegar, 2 tablespoons honey, ¼ teaspoon ground ginger