Cohabitation of the Tatars and the Kazakhs in the Russian Empire brought to life a process of mutual acculturation. On the basis of testimonies of contemporaries, its manifestations in everyday life were reconstructed: changes in traditions related to home improvement, food intake, attitudes towards clothing items. It is concluded that the recorded changes are fundamental and allow us to speak on a concrete example of the gradual formation of a single social and cultural space of the Empire.