Pour 5 cups of water in a pan, add beef, washed lentils, all of the dry spices, plain yogurt, ginger, and garlic. Boil mixture on medium heat until the meat becomes tender. Remove from heat. Let it cool.
Meanwhile prepare the stuffing. Mix all of the chopped ingredients, onion, ginger, coriander leaves, and mint leaves together.
Grind beef mixture in a food processor. Pour in the beaten egg and knead well.
Break off 1 tablespoon of the mince paste, wet your palm and place it in the center of your palm. Shape it into a smooth ball. Indent the center with your thumb and press a little of the stuffing mixture into this. Fold the sides over carefully and reshape into a smooth half flat round shape.
Repeat this with the remaining mince. Heat a heavy based frying pan and add just enough oil to cover the surface. Add 3 to 4 kababs at a time and fry on low heat to a crisp golden color on both sides.