This buncheong style brown malcha bowl is made by hand by a ceramicist in Korea, using dumbeong ('dipping') technique. The bowl is dipped in a mixture of clay with the bottom uncovered, showing the grey clay at the bottom.
The shape of this bowl is round, in the Ido tea bowl style.
As each piece is individually made and dipped, the shapes and pattern of the clay is not uniform. Some pieces may have show more orange than the bowl shown in the image.