JERUSALEM (JTA) — A tiny clay seal that likely certified the purity ... was discovered during a sieving process of the soil removed from the excavation. It is stamped with a two-line Aramaic ...

I used a gray colored clay to form a small pot and lid. After firing it I discovered that it had a small leak. I had read that soap plant can be used to seal pots so I dug up a bulb and tried it out.