Serving Plates

A dish of hors-d'oeuvre used at table, funished internally with roots or other artificial similar things, among which one intersperses some natural [foods].
***** Diderot, Fayencerie, Ouvrages, Pl. III, Fig. 55: Un plat de hors- d'oeuvre à l'usage des tables, garni intérieurement de racines ou autres choses semblables artificielles, parmi lesquelles on en mêle de naturelles.

It would appear that our modern glass and pottery relish plates, trays and dish sets are a direct result of this idea.