This is a simple way to use Sundays roast joint .
Fry a sliced onion in a wok with a little oil for five minutes, stirring occasionally.
Add a chopped tomato and ten curry leaves, followed by the beef cut into strips.
Pour in a jar of Pataks madras sauce and stir fry for about ten minutes. Add two teaspoons of sugar, stir and cook for five minutes.
Serve with rice. Delicious!