Flow blue is a style of pottery characterized by its blurred, flowing cobalt blue decoration on a white background. It was particularly popular in the mid-19th century, with production centered in England. The distinctive "flow" effect was achieved by adding a volatile chemical, usually ammonia, to the kiln during firing, causing the cobalt to bleed into the glaze.

Royal Doulton, a prominent English ceramics manufacturer, produced numerous flow blue patterns, including the "Madras" pattern, which features oriental-inspired scenes and floral motifs. These pieces were widely exported to North America and were popular for their decorative appeal and relatively affordable price. Today, flow blue pottery is collected for its historical significance and aesthetic qualities.

This particular serving bowl came from a very wealthy estate in Princeton NJ.