Moving Into Porcelain

I've finished the stoneware pots I want to have ready for Pesach, and have a week or so before I need to start [glaze-] firing them. I've also come to the end of my stock of French stoneware- I'm not sure if Ullman [from whom I buy it] has it either, and anyway I'm waiting for the arrival of 1/2 ton of English clay from Potterycrafts [a clay I used years ago]; all in all, a good time for some  porcelain. I'm right out of facetted celadon and copper-red cups, so they're first on the list.