"Barley rusks make this a meal in itself by thickening up the salad. A good olive oil and seasonal vegies at their peak are a must," says John Rerakis. "Purslane or caper leaves are traditional additions, but if you can't find these you can substitute small basil leaves."
Note Barley rusks, purslane, caper leaves and Greek oregano are available from select Greek delicatessens. Dried Greek oregano, also known as rigani, is more aromatic than the dried oregano sold in supermarkets; if unavailable, substitute dried oregano.