In chopper, add onion, green chilies, coriander, chop it and keep aside.
In bowl, add ground beef (mince), chopped onion, green chilies, coriander, garam masala, chili flakes, salt, red chili powder, turmeric, 1 egg, poppy seeds (khashkas) and mix it properly.
Now add ground flour in same bowl/ mixture and mix it as well and keep it on room temperature for 10-15 minutes.
Put some oil your palm and make meatballs (kafta).
Pull all meatballs in plate or tray and keep them in freezer for 3-4 hours.
Once meatballs are hard then you can put them in storage bags or shopping bag to store them.
TIP: You can store them unto 1 month and then whenever you want to make any gravy or rice then you can use them immediately.
Enjoy!