Wash and finely dice or grate the cucumber
Sprinkle the cucumber with a pinch of salt and let it sit for 5–10 minutes
Squeeze out excess water from the cucumber using your hands or a clean kitchen towel
In a bowl, combine Greek yogurt, cucumber, minced garlic, and chopped dill
Add lemon juice, olive oil (if using), salt, and pepper
Stir until everything is well combined and taste to adjust seasoning
Chill in the fridge for at least 20–30 minutes before serving
Draining the cucumber is the key to thick, restaurant-quality tzatziki that doesn’t separate. Chilling the mixture helps the flavors meld and the garlic mellow out.