Make while the cauliflower is cooking. In a small bowl whisk together corn starch plus 1 tablespoon water, set aside. In a small sauce pan mix together orange juice, honey, soy sauce, rice vinegar, ketchup, sriracha, ginger and garlic. Bring sauce to a low boil, stirring constantly. Stir in cornstarch mixture and bring to a boil again. Continue stirring until sauce has thickened. (approx 1-2 min.)