Add the vinegar to a blender, replace the lid, turn it on, and through the feed tube add, 1 at a time, the garlic, crushed red pepper, salt, and black pepper. Leaving the blender running, add the olive oil in a slow thin stream. Set aside until needed.
Toss the greens, olives and cucumbers together with enough dressing to coat. Fold in the feta cheese. Serve additional dressing on the side.
2008, Robert Irvine, All Rights Reserved