Finely chop the garlic cloves. Spread the garlic, black pepper, salt and pawpaw purée on the meat then and set aside to marinate for about an hour or two.
In a pan over medium heat, add the oil, then onions and sauté until almost golden-brown.
Add the marinated beef, then cook for about five minutes or until you seal the pores (when meat changes colour).
Pour in the buttermilk, curry powder and tomato paste. Mix well for about five minutes then add the two cups of water and bring to a boil.
Cook for another 10 minutes or until all the liquid is evaporated, the sauce becomes very thick and coats the beef and the beef is super soft.