Mochaware: Tobacco Tea Diffusion Glazing

Originating in late 18th-century Staffordshire, England, the method involves applying an acidic “tea” solution—traditionally made from boiled tobacco and colored with materials like iron oxide—onto a freshly coated layer of wet slip (a fluid clay mixture). When the two liquids meet, a rapid chemical and physical interaction occurs: differences in surface tension and acidity trigger a dynamic instability that causes the distinctive tree-like patterns to spread across the surface.

Participants will learn both the historical context and hands-on techniques behind this unique decorative style, gaining insight into how chemistry and fluid dynamics shape ceramic design.

You must bring 2-3 leather hard pieces.

Instructor: Joann Kern

Open to ages 12+ (waiver needed for minors at time of attendance).

Class needs a minimum of 3 attendees to run.

Registration closes two (2) days before the event.

Attendees can receive refunds up to 7 days before the event start date.

Active members receive 25% off the class list price, with code: MEMBER

Know what’s Happening Next — before everyone else does.

Get App

Host or Publisher Events at Port City Makerspace