Prepare the kyufte: mix the ground pork, ground beef, onion, garlic, salt, pepper and cumin.
Cover and let rest for 30 minutes in the refrigerator.
Divide the filling into 8 portions, form balls and flatten them.
Prepare the kebapche: mix the ground beef, ground pork, cumin, salt and pepper.
Divide into 8 portions and shape into long cylinders. Set aside in the fridge.
Prepare the skewers: season the lamb with salt, pepper and paprika.
Cover and let rest for 30 minutes in the refrigerator.
Assemble the skewers, alternating the pieces of lamb, the fat or strainer and the mushrooms.
Heat the barbecue, grill or grill pan.
Cook the kyufte for about 5 minutes on each side.
Cook the kebapche for about 5 minutes on each side, turning regularly.
Cook the skewers, turning often and brushing with melted butter.
Serve immediately with fries, lyutenitsa and grated kashkaval.