Crispy Curry Beef Stir Fry

Ingredients (11)

• 1 lb flank steak
• 2 tbsp rice vinegar
• 2 tbsp soy sauce
• 2 tbsp Chinese curry powder
• 1 tbsp oil
• 1/2 cup beef stock
• 1 tbsp black bean paste
• 1 tbsp cornstarch
• 2 tbsp water
• 1/2 tsp white pepper
• 1/8 tsp salt