Where does “цаци́ки” come from?

цаци́ки (Russian) comes from Greek τζατζίκι, from Ottoman Turkish جاجیق.

Ancestry of “цаци́ки”, step by step

Step	Language	Word	Meaning
1	Greek	τζατζίκι	tzatziki
2	Ottoman Turkish	جاجیق	—

цаци́ки — Etymology, Origin & Word History | Etymology Explorer