Note - The entire recipe is done on either medium-high or medium-low heat. If at any point, the ingredients look dry or burn on to the pan, you may add 1/2 tbsp of oil and also lower the heat but continue to cook and stir often.
Start by dicing the meat into desired pieces first. Next, boil if needed to then on medium-high heat, fry the meat cubes lightly on a pan or a skillet using little oil as possible. Fry until the meat turns light brown.
Once the meat is ready. Reduce the heat to medium/low then add both curry leaves and mustard seeds over the beef.