What Greek dip is made from yogurt, cucumber, garlic, and dill?

The Greek dip made from yogurt, cucumber, garlic, and dill is tzatziki.

Greek-style tzatziki is a cold, thick sauce or meze made with strained yogurt, grated or chopped cucumber, garlic, salt, olive oil, and an acidic ingredient such as vinegar or lemon juice. Dill is common, and some recipes also use mint, parsley, or other herbs. Straining the yogurt and removing excess cucumber liquid gives the dip its characteristic creamy texture.

Tzatziki is commonly served with pita, grilled vegetables, and fried foods, and it is a familiar accompaniment to gyros and souvlaki. Related yogurt-and-cucumber preparations appear throughout southeastern Europe and West Asia. In Turkey, the thinner, often diluted relative is called cacık; other regions use names such as tarator or jajeek.

The main possible confusion concerns hummus and baba ghanoush. Hummus is based on chickpeas and tahini, while baba ghanoush is based on roasted eggplant and tahini. Taramasalata is a fish-roe spread. Although recipes vary in herbs and acidity, the yogurt-cucumber-garlic combination points clearly to tzatziki.