Dear Father

 I have sinned!!!!! I'm going to come out of the closet on this surface. I sprinkle wood ash on my shino fired in the gas kiln to give a wood fired look!  I sprinkle it on the wet glaze so it sinks right into the surface.

There I feel much better now.
I use a couple of slips that seem to respond to the ash pretty well. Funny thing is that the red colour surfaces where the slip isn't. That copper red migrates under the surface of the slip and shows up where I had a paper resist pattern.
The General Purpose Slip I use is:

General Purpose White Slip

400                 Ball

400                 EPK

500                 Nep Syn

600                 Silica

 for copper red I add 2% each of copper carb, cobalt carb, manganese and RIO.

for Mother in Law blue I add 1/2 % cobalt carb and 1% iron.