Large brown pottery vessel with bamboo decoration

Looking for info on this pottery vessel please.
It is large and heavy, about the size of a kettle.
The pottery is thick and seems to be red clay painted dark brown.
It has a large spouted opening.
It does not have any opening on top or any lid. It is a closed vessel with only the spout.
It has a handle.
It has some sort of pleated reed, grass or bamboo pattern on the outside and around the handle.
There are no markings and the base is flat.
I have seen a similar item on the web described as a Bontok salt container from the Philippines.
The lady who gave me this wonderful item had no idea where it came from. She bought it at an antique fair.
It’s an amazing piece and I’m very curious about it.

Thanks!

Thanks for your message. Here is a photo of the base. No marks that I can see. It is painted the same as the rest of the item.

This is a japanese vintage item. I looked for it with google lens and found smth alike on a japanese online market. I think japanese ceramics are GREAT and i wish i would find some :D but there is a low chance here, in romanian junkyards.