''' in the metallic finish at the Doña Rosa Workshop
Doña Rosa For almost all of the town's history, the color of the local pottery was a dull dark gray, until Doña Rosa Real discovered a way to create a shiny black finish commonly known as
barro negro pottery. Doña Rosa died in 1980, but the tradition of making the
barro negro pottery is being carried on by Doña Rosa's daughter and grandchildren who stage demonstrations for tourists. Despite being the origin of
black polished
clay, the pieces at the Doña Rosa Workshop are less expensive than in other parts of Mexico.
The Cantaro . Two pottery pieces which are indicative of San Bartolo are the traditional
Cantaro, a large jar which can be used for liquid storage or as a musical instrument and the "chango mezcalero" or mezcal monkey. This is a clay container in the shape of a
monkey to hold
mezcal, Oaxaca main
distilled spirit, which has become a collectable folk art item. The container can be painted in bright colors or left in its gray color with detailed etching. The small opening at the top is plugged by a stopper of cork or
corncob. These bottles are sized to hold about 700 to 1000 milliliters of liquid and were originally meant to serve as decorative containers in
bars. In Mexico, he has exhibited his work in dozens of expositions and has won three national level awards. His work has also been featured in five published books. Martinez's work has been exhibited in countries such as the United States,
Colombia,
Argentina,
Lebanon,
Germany,
Spain, and
Japan, with one of the latest exhibits in
New York City in 2008. In that same year, he created a
mural in
barro negro at the Baseball Academy in San Bartolo Coyotepec sponsored by the
Alfredo Harp Helú Foundation. Each piece Carlomagno makes is unique in some way, but certain themes such as
oral histories,
indigenous legends, certain Christian themes and death, called "our grandmother." ==The municipality==