O Coffee is a specialty roastery in Glendale, California, offering artisan hand roasting alongside interactive workshops where visitors learn the craft firsthand. The roastery operates on a small scale, limiting workshop sessions to four people for an intimate experience that covers green bean evaluation, processing methods, and how each step shapes the final cup. O Coffee sources single origin beans from Costa Rica, Colombia, and Nicaragua, roasting in small batches with a focus on freshness. The space doubles as a showroom with an integrated art corner, blending coffee craft with local creative culture.