Found this while noodling around in a Pottery Basics Yahoo group.
#1997 Fake Avery Flashing slip opaque white to orange Cone 6 10
15 Newman red or Red Horse clay
1 Soda Ash
Wait, but...Newman Red is a fireclay. Red Horse is an earthenware. How are these interchangeable in this recipe?
Guess I'll have to mix them up and find out.
Architectural Digest profile of East Fork Pottery
40 minutes ago