The technological development of Saint-Porchaire ceramics is complex and difficult to trace. Little historic documentation exists, particularly in primary sources. Furthermore, everything from the origin, patrons, and manufacturing locale of these wares to their identity as ceramics has been questions repeatedly. Most contemporary ceramic historians agree that the pieces are handmade from multiple clay sections, and that the three-dimensional attachments, masks, figures, insects, rosettes and so on were made separately and added. The complex manufacturing process has never adequately been explained, however, even though theories about the production have often been included in the literature on Saint-Porchaire ceramics. The following analyses attempt to reconstruct the methods and sequences of fabrication of each of the three National Gallery vessels. Nondestructive analysis was performed using optical microscopy and x-ray fluirescence spectroscopy (XRF) of the surface textures and xeroradiography of the internal structures. Microscopic samples were taken for destructive analysis. These samples were analyzed using thermoluminescence dating (TL), x-ray diffraction (XRD), electron beam microprobe, scanning electron microscopy (SEM) with energy dispersive x-ray analysis (EDX), and refiring tests.