1-Mix all ingredients (except butter) together and grind in a chopper for 1 minute until well combined.
2-Set the mixture aside to rest for 2–3 hours in the refrigerator.
3-After marination, add butter and mix well into the meat mixture.
4-Shape the meat into small balls, then thread each onto a skewer.
5-Flatten the meat around the skewer into an even layer using wet hands.
6-Barbecue on low coal or gas grill heat (or in a preheated oven at 275°F / 135°C).
7-Turn the skewers periodically until the kababs change color and are cooked through. Do not over-grill or allow the kababs to brown too much.