Daging Sapi Jeruk Renyah

Bahan-bahan (3 porsi)

• 10 oz beef sirloin (or flank steak, cut into bite-sized pieces)
• oil (for deep-frying)
• 1 teaspoon cooking oil
• 2 cloves garlic (minced)
• white sesame (for garnishing)
• scallion (chopped, for garnishing)
• 1/4 cup all-purpose flour (sifted)
• 1 large egg
• 2 tablespoon cornstarch
• 1/2 teaspoon baking powder
• 1/4 cup water (ice cold)
• 1/2 tablespoon cooking oil
• 1/3 cup orange juice
• 1 tablespoon soy sauce
• 2 tablespoons sugar
• 1 teaspoon apple cider vinegar (or Chinese rice vinegar)
• 1 teaspoon cornstarch
• 1 teaspoon grated orange zest (optional)