Yogurt-based dips are popular everywhere from the Middle East to Central Asia and Cacik and Tzatziki most likely have the same origin, but while these delicious dips are quite similar they also have a couple of differences: The main difference between these two delicious cucumber dips is that Cacik is Turkish and Tzatziki is Greek.  Both dips have yogurt, cucumber, and garlic as their main ingredients. However, the seasoning is different. Both use fresh herbs, but the unique rich flavor in Cacik comes from the dry mint. Some people will say that cacik is made with diced cucumber while tzatziki is made with grated cucumber. I have been to Turkey many times and always enjoyed cacik served with grated cucumber.