I am still tinkering with the native type pottery. wild clay, pinched and rolled by hand and fired in a camp fire. All hold water but a couple had lots of experimental "trash" in them which inadvertently caused a couple to weep very slowely. once dry again I will season them with warm oil good and hope they do a little better. It's just a very slight weep tho, nothing to deter me from using them. Drank my morning coffee out of one of the weepers this morning. Still not much luck on large vessels though, they always crack during the air drying stage.