Peel and grate the cucumber.
Transfer the grated cucumber to a fine-mesh sieve or cheesecloth and press firmly to remove as much moisture as possible.
Add the drained cucumber to a mixing bowl.
Stir in the Greek yogurt, fresh dill, garlic, olive oil, lemon juice, and kosher salt.
Mix until smooth and well combined.
Let the Tzatziki Recipe rest for 10–15 minutes so the flavors blend together.
Taste and adjust with extra dill, lemon juice, or salt if needed.
Serve immediately or chill before serving for an even fresher flavor