Seventy test tiles and one celadon
It took the whole summer to find this season’s green. Here’s what the other sixty-nine taught us.
Every new glaze starts as a row of test tiles: small slabs of the same clay as our pots, each dipped in a slightly different recipe. We change one thing at a time, usually the amount of iron, and fire them all together so the kiln can’t take sides.
The celadon in the shop now is tile 41. It has a little less iron than last year’s, so it reads as morning light rather than sea glass, and it pools beautifully in the bottom of the low bowls. Tiles 1 to 40 now hang on a nail by the sink, a small wall of near misses.