1 lb sirloin steak, cut into thin strips
¼ cup cornstarch
salt, to taste
1½ cups peanut oil, for frying
⅓ cup fresh orange juice
¼ cup seasoned rice wine vinegar
2 tablespoons orange marmalade
2 tablespoons soy sauce
2 tablespoons hot chili sauce (like sriracha)
½ tablespoon brown sugar
2 cloves garlic, minced
¼ teaspoon ginger, minced
3 green onions, green part only, chopped
½ red pepper, de-seeded, chopped
orange zest, to garnish