It is very cold here, minus 11 degrees f. when I got up, overcast and generally not the best Monday to start a week. Pots usually help and act as a natural mood elevator, so what could be better than Persian blue. Illustrated is a finely thrown Turoku-ao guinomi by Kato Kato. The decoration shows tones of blue from the cobalt used to make the black underglaze under the rich alkaline based Persian blue glaze. Kato Kenji was a master at Turoku-ao and his fluid and spontaneous brushwork is just wonderfully expressive and matches and articulates the form like few others.