Grate the cucumber and squeeze it hard in a clean towel to remove as much water as possible.
In a bowl, combine the Greek yogurt, minced garlic, lemon juice, and olive oil.
Fold in the drained cucumber and chopped dill.
Season with salt and stir until smooth.
Cover and chill for at least 30 minutes to let the flavors meld.
Drizzle with a little olive oil before serving.