1 kg of minced beef, ground twice
100 gr of onion, finely grated
2 cloves of garlic, minced (optional)
2 thick slices of stale bread, soaked in milk, crusts removed
1 tsp of dried oregano
2 tbs of mint, finely chopped
2 tbs of parsley, finely chopped
2-3 tbs of olive oil
6 tbs of kefalograviera cheese (a type of gruyere), grated
salt
freshly ground pepper