Put the cucumber in a strainer set over a bowl. Sprinkle with 1/8 teaspoon salt and drain for 1 hour. Put the yogurt in another strainer set over a bowl and drain for 1 hour. Combine the cucumber and yogurt in a bowl with the remaining ingredients and stir well. Cover and chill for at least 1 hour before serving.
Yield: 1 1/2 cups