Place a piece of cheesecloth in a colander and pour in the yogurt.
Allow the yogurt to drain for several hours.
Place the grated cucumber in another colander and allow to drain for 2
hours.
Mix together all ingredients exept the additional olive oil and chill.
Place in serving dishes and drizzle additional olive oil on top.
Serve as a spread for bread or as a dip for vegetables. This is
generally served as a first course.
Note: Store this dish covered in the refrigerator and it will keep
well for 2 or 3 days.