Step 1

In a bowl mix the curry powder, vinegar and soy sauce. Add the thin strips of beef and massage with hands to cover each piece of meat with marinade. Cover and place in refrigerator to rest for 30 minutes.

Step 2

In a wok placed over high heat, add the oil. In small batches to ensure the meat gets seared, not steamed, quickly stir fry the meat until cooked on both sides, 2-3 minutes. Remove from wok and set aside.

Step 3

Add the 1/2 cup of beef stock and scrape up bits of caramelized beef bits. Add the black bean paste and stir. Stir in the cornstarch slurry and stir to create a smooth sauce. Cook for a minute and add the meat back in and stir fry for 3-4 minutes. Season to taste with salt and white pepper if needed. Serve with steamed rice and vegetables if desired.