Chop the onions until they become juicy.
Discard the onion juice and add the distilled onions into a bowl
Add the ground meats and the salt and spices.
Mince the garlic cloves and add them to the mixture.
Add egg.
Mix the components with your hand for some minutes until it becomes like a paste that does not fall apart.
Let the mixture rest at the fridge for at least one hour. Discard the onion juice again after taking out of the refrigerator, if there is any.
Divide the composition into 8 equal pieces.
Prepare a bowl of water and put it next to the meat.
Get the skewer in your left hand and the meat in the right hand and squeeze the meat on the skewer until it doesn’t fall apart.
Continue step 10 for all eight meat pieces
Cut tomatoes into half and attach them to skewers (1 skewer for two tomatoes)
Prepare your barbeque.
Put the meat skewers on the barbecue.
Brush the melted butter over the Kababs and tomatoes.
Turn over the skewers time by time to prevent burning.
After 45 minutes, all the Kababs are ready.
Grill the tomato skewers.
Put two kababs inside a Lavash bread or next to a plate of Chelow.
Put tomatoes next to kababs.
Frost the sumac on the Kabab to your taste.