eHow - Hobbies, Games & Toyshttp://www.ehow.com/guide_11-http://www.ehow.com/guide_11-hobbies-games.html.htmlwww.ehow.comCeramic Shoyu Bottle Carbhttp://www.ehow.com/how_4952582_ceramic-shoyu-bottle-carb.htmlA carb for a ceramic shoyu bottle is a hole that enables easier pouring. Learn how to add a carb to a shoyu bottle with tips from a master potter in this free ceramics video. Published on 4/30/2009