Tzatziki is a dip which originated in Greece and is made up of salted strained yogurt mixed with cucumber, garlic, salt, olive oil, vinegar or lemon juice and herbs like dill, mint, parsley or thyme whereas cucumber raita is popular throughout India and is generally made from non-strained yogurt mixed with cucumbers, coriander, and mint leaves, flavored with some cumin seed powder and finely chopped green chilies.