Becky's Greek Potato Salad

In a steam set over boiling water steam the potatoes in batches, covered for 6 to 8 minutes, or until they are just tender and in a large bowl combine them with the olives. In a small saucepan of boiling water boil the garlic for 5 minutes and peel it. In a blender puree the garlic with the oregano, vinegar and the oil, add the feta and blend the dressing until it is combined well. Toss the potato mixture with the dressing, the parsley, the pepper and salt to taste.