Preferably in the Nathon area.I would be grateful for any suggestions.

Just about any of the smaller Thai shops, that look like junk shops. Especially the ones that sell those Thai BBQ's, you know, the ones that are made from a metal bucket on the outside, and the Thais use them for heating pots and BBQing.

20baht a bag next to seven eleven on the right just before Nathon.

20baht a bag next to seven eleven on the right just before Nathon.

Thanks to you both.

I thought I had looked in the shop by 7-11.Obviously not properly!!!!