Thicken yogurt: Strain yogurt using a cheesecloth or paper towel for 30 minutes to 3 hours to remove excess moisture (can skip this step if you're in a hurry).
Prep cucumber: Meanwhile, sprinkle a pinch of salt onto shredded or diced cucumber and spoon into cheesecloth or paper towels. Let sit for a few minutes then wring it out to draw out moisture.
Mix: Mix together yogurt, cucumber, dill, garlic, and lemon. Season with salt and pepper to taste.
Notes
Add a touch of extra-virgin olive oil for flavor and shine.