“Alluvium” is a series of decorative bowls that are made of enamel-coated, sand-cast iron. Portnoy
was invited to take part in exploring the connection between art, design and industry as part of
Kohler’s residency program. The Kohler factory is known for its enamel-coated cast iron sinks and
bathtubs, the fabrication of which is a trade secret developed over two centuries.
With the help of professional staff on the factory floor, she explored the methods and special
techniques that distinguish Kohler’s process. Taking inspiration from the way water streams through
Kohler’s products, she used water in this project to create a unique, natural pattern, by sifting a
second coat of enamel powder on the surface, and dribbling water to create artificial streams that
carry away the enamel grains. The bowls were then heated for the fina
