Cucumber Yogurt Dip

Coarsely grate the peeled cucumber halves onto a clean kitchen towel. Pat the cucumber in the towel to remove the juices. Transfer the cucumber to a bowl. Stir in the yogurt and garlic, then add the oil and lemon juice. Season with salt. Refrigerate until chilled, at least 1 hour and up to 8 hours. Garnish with dill sprigs and serve with cucumber spears