Does anybody have the name and adddress of shops in Chinatown that stock these?

I don't remember the names, but there are several at the Saphan Lek market, it's literally on top of the klong at the end of Yaowarat road, but the easiest way to get there is through Charoen Krung, the road that runs parallel on the North of Yaowarat

Thank you AleG.

If anyone has further information, I would appreciate it.