This is the 14274th most frequent Polish word.
proszkiem
The Polish word "proszkiem" means "powder" (instrumental case).
The word 'proszkiem' here is the instrumental case of 'proszek' meaning 'powder', indicating the means used for cleaning.
Sprzątaczka posypała podłogę proszkiem do czyszczenia.
The cleaning lady sprinkled the floor with cleaning powder.
'Proszkiem' in this sentence is used as the tool or substance ('powder') involved in the mixing process, in the instrumental case.
Mieszam farbę proszkiem, aby uzyskać odpowiedni kolor.
I mix the paint with powder to achieve the right color.
Here, 'proszkiem' refers to 'baking powder' as a component used to prepare the dough, showing its instrumental case use for methods or components.