The Kurinuki Method

Kurinuki-built pottery is super strong and has a unique organic feel to it. There are many methods for hand-building ceramics, and while Kurinuki isn't exactly a household term, it is growing in popularity for good reason. 

The Kurinuki method refers to the act of beginning with a carefully wedged and shaped lump of clay that is then carved to create an interior, rather than something like coil or slab building where you create an exterior and the interior is more of a by-product. This image represents the method well: 

Kurinuki stems from the Hagi-Yaki method, which can be traced back to the arrival of Korean potters to Hagi (a small town situated in Yamaguchi Perfecture on the Japan Sea) following Japan's military invasion of the Korean peninsula in the late 1500s. Traditionally used to create tea cups for ceremonial and ritual use, potters all over the world today use this method to make anything from mugs and bowls to vases or serve ware. 

Yoshitaka Hasu of Iga, Japan with a small collection of his kurinuki vases

3) Handbuilt, A Potter's Guide: Master Timeless Techniques, Explore New Forms, Dig and Process Your Own Clay Book by Melissa Weiss