Shish Kebab is extremely popular in Bulgaria – it is served in every restaurant in the country. For Lamb shish kebab the needed ingredients are: 1 kg of lamb bon fillet; 120 grams of onion, a soup spoon of oil (in your preference), oregano, black pepper and salt. Because the shish kebab is actually meat threaded on a skewer, there are many different variations of what you can add in between the meat. Most common additions are mushrooms, onion, red or green pepper.