Reproduction of an Old Irish Metal Potato Ring with Dish (date of artifact unknown).
The potato ring was invented in London, possibly in the early 1700s, to hold baked potatoes. The ring would be placed onto a large plate and filled with potatoes, which could then be removed with tongs. Sometimes, a round dish containing the potatoes would be placed into the ring instead. The dining table was thus protected from heat damage.
It was in Ireland that the potato ring became a work of art, often decorated with intricate farm scenes, and made of sterling silver. From the 1740s on they were usually spool-shaped, and the techniques used by silversmiths included piercing, chasing and engraving. Piercing had a practical benefit as well: it allowed the air under the hot dish to be vented, giving more protection to the table.
The potato ring was essential to fine Irish dining in the mid-1700s, and continued to be used into the early 1900s. In England and France, it fell out of fashion near the end of the 1700s.