Sweet and Sour Pork Tenderloin

Ingredients

• 300g pork tenderloin (cut into strips)
• 1 egg
• 3 tbsp cornstarch
• 2 tbsp all-purpose flour
• 1/2 tsp salt
• 1/4 tsp white pepper
• Vegetable oil (for frying)
• 3 tbsp ketchup
• 2 tbsp white vinegar
• 2 tbsp sugar
• 1 tbsp light soy sauce
• 1/2 cup water
• 1 tsp cornstarch (for thickening)
• 1 tbsp water (for thickening)
• White sesame seeds (for garnish)