Ohr studied the potter's trade with Joseph Meyer in New Orleans, a potter whose family hailed from Alsace-Lorraine, as did Ohr's. Ohr's father had established the first blacksmith shop in Biloxi and his mother ran an early, popular grocery store there. In his lifetime, Ohr claimed to have made over 20,000 ceramic pieces. He called his work "unequaled, undisputed, unrivaled." In 1884, Ohr exhibited and sold his pottery at the World's Industrial and Cotton Centennial Exposition in New Orleans. Of the hundreds of pieces he showed, Ohr boasted he showed "no two alike."