Pass-through Distillation (PTD) is a powerful public domain concept, but to date its only commercial champion is the Canadian company Drystill. Drystill’s contribution to the field is a proprietary piece of equipment called a SAM, which combines the first two process steps into a compact and efficient unit. When PTD is carried out using a SAM, the process is given a Drystill tradename, TIEGA. This video is something of a Drystill infomercial,