Grate the cucumber using the fine side of a grater. Place it in a clean kitchen towel or paper towel and squeeze out as much liquid as possible. This keeps the tzatziki thick and creamy.

In a bowl, combine the Greek yogurt, grated cucumber, garlic, olive oil, lemon juice, and dill. Stir until smooth and well blended.

Add salt and pepper to taste. For the best flavour, refrigerate for at least 30 minutes before serving.

Drizzle a little olive oil on top before serving. Enjoy with pita bread, fresh vegetables, or alongside grilled chicken, lamb, or falafel.