There's something intriguing about the name - Cold Porcelain. What on earth could it mean?
The 'cold' part refers to it being air dry clay, not requiring baking to set the shape. It's really easy to make, and nice to work with, but it's not suitable for fine detailed pieces.
I use it to make eggs for my faux birds nests, and other things that don't need to be really intricate. Some people use it to make flowers and leaves, which I haven't tried yet.
Mix with a rubber spatula in a stainless steel bowl - this will stick to plastic.
Once the ingredients are mixed together, pour it all out onto parchment paper, which has a bit of cornstarch on it. Rub cornstarch onto your hands, and knead the dough. It will be extremely sticky and loose at first, but within a few minutes and the addition of a tiny amount of cornstarch it starts to hold its shape. It should be soft and flexible when you're done.
Wrap in cling wrap and store in an airtight container in the refrigerator.
To use it, take off a bit and rewrap the original lump to stop it from drying out. Whatever you make with it will need to air dry for several days. Keep in mind that it tends to slump, and it will also crack on the bottom.
When the pieces are completely dry, you can paint them with acrylic craft paint. I want to try making some flowers to use the fairy baby faces that I make out of other modeling clay. The face will be the center of the flower, and they'll be magnets to hang on the fridge.