Step one: Blend (or chop finely) the garlic, olives and olive oil
together to form a marinade.
Step two: Cut the cheese into 2.5cm (1in) cubes.
Step three: Cut tomatoes into four and remove the seeds. Cut potatoes
in half lengthways, boil until tender and drain.
Step four: Chop the remaining vegetables into 2.5cm (1in) cubes
and thread them onto skewers with the potatoes and tomatoes.
Step five: Marinade the kebabs for two hours. Prepare barbecue for
cooking if not using grill.
Step six: Cook over barbecue or grill until tender, turning after
two minutes on each side, and serve immediately in pitta bread.