Chawan, Japanese for tea bowl. Wider than taller always. A bowl which is taller than wider is a yunomi. Dinah’s Adjusted Ash glaze mainly with underlays, and on glazes, multiple firings.
I recall being a guest at a private summertime tea ceremony in Iwakuni, Japan in the 60s. The heat was memorable as was the tea bowl which looked substantial in my hostess’s delicate hand. She used a summer tea bowl shape — think inverted Mt. Fuji. Shaped to create more surface area in order to cool the tea to a more refreshing temperature. If you’re unfamiliar with this ritual there’s bound to be one on YouTube.
Chawan above winter shapes.