Mince the cooked meat and keep aside.
Heat oil in a pan and add chopped onion. Cook till it becomes golden.
Add crushed ginger and garlic, curry leaves. Cook for 2-3 mins or till the raw smell goes.
Add chicken/meat masala. Cook for 2-3 mins.
Add ketchup, mix well. Add 2 tbsp hot water to bring everything together.
Add minced chicken/beef and mix everything well. Check for seasoning and remove from fire.
Remove the crusts from bread slices. Roll each slice very thinly using a rolling pin. Sprinkle some water, if required.
Apply water on all four sides of the bread. Place the filling in the middle. Roll the bread and seal the edges tightly. Repeat the process until the filling is used completely.
Heat oil in a deep pan for frying. I usually heat the oil on medium-high, once it's hot enough (not smoking) I reduce it to low -medium. Fry the rolls in batches. Make sure you flip the rolls, to ensure even browning all over.