The left over material from the traditional potters kiln after baking pottery items is a good additive for the soils. These kilns yield the following material after burning, wood and straw (paddy straw), etc.
- Charcoal - mostly from the wood used
- Ash - from the straw used wood used
- Broken pieces of pots - some of the pots broken during the baking process
- Brunt soil used to coverup the kiln