I posted recently a picture of a tree mug with a "salt shino" glaze that looked terrible after unloading the wood-fired kiln. I had a couple of mugs left that didn't get in the kiln, so I decided to put one right up front by the firebox during the next firing.
Well, the mug fired beautifully. So, I haven't given up on the glaze yet. Perhaps this is a glaze that likes a lot of hot flame? The glaze is one taken from John Britt's The Complete Guide to High-Fire Glazes:
Neph Sy 68
Ball Clay 14
Red Art 4.5 (I used local red clay)
Here's two pictures of the ugly mug and the beautiful mug.