By Cone 10, I mean a small 10 in the sitter and a weak 9 by witness:

Wood Ash Glaze: Native Terra Cotta 50, Wood Ash 50.........Bernard Leach

Celadon Ash: Feldspar 50, Wood Ash 50...............................John Jelfs

Nuka: Feldspar 33, Wood Ash 33, Flint 33.............................Phil Rogers

Karatsu Style Choseki: Feldspar 40, Wood Ash 30, Stoneware Clay Body 30...Johanna Becker

Karatsu Style Tenmoku: Feldspar 40, Wood Ash 30, Stoneware Clay Body 30 , Black Iron Oxide 10

Stony Matt: Feldspar 35 , Wood Ash 35, Kaolin15, Talc 15....Daniel Rhodes

Ochre Ash, Artificially Reduced with Silicon Carbide: Feldspar 35, Ash,12, Kaolin 30, Whiting 23, Yellow Ochre 5

Crackle: Feldspar 80, Kaolin 10, Whiting 10 .........................Kenneth Clark

Feldpar: Usually a Soda Spar

Woodash: Mixed hardwood ash from my woodburner, screened but unwashed. I initially screen it through a screen door screen, then when mixing the glaze it goes through a smaller screen (80 mesh?), then I throw away the excess. The glaze thereby contains less silica (most of what ash is) but I get all the soluable potassium into the glaze. I've noticed that when I decant the supernatant a number of times the glaze becomes more matt.

Silicon Carbide: 1-2 % in the glaze

The Clay: from Standard Ceramics, Carnegie, PA: