Ok

(prop. okka) – an old unit of weight measurement used in the Ottoman Empire, 1 okka = 2¼ lbs = 1.282 kg. Most often it was used in coffee and spice trade. It can be found in purchase registers from magnate courts which ordered substantial amounts of coffee and spices.

Source: “In Warsaw, for one oko of huge raisins, for two lots of nutmeg flower, for one lot of cinnamon,” says the register of Maria Zofia Czartoryska, Mrs voivode of Ruthenia, AGAD, Akta osób i rodzin, ref. no. 237, p. 74, Regestra percepty…

See also: B. Popiołek, Między kuchnią i spiżarnią. Magnackie regestry wydatków kuchennych w osiemnastowiecznej Rzeczypospolitej, Warszawa 2025.