Postby pittmirg » 2018-02-14, 17:31
Well, powidła is today generally a plurale tantum. I only use the singular in the expression szwarc, mydło i powidło "miscellaneous things, what not". Why would it be -u, though? I think you got z + Gen. "from" and z + Instr. "with" mixed up.
Śnieg, zawierucha w nas