I think you mean mojama... It's from the Atlantic side of the south coast of Andalucía, mostly around Cádiz and the Costa de la Luz. This is a huge Atlantic bluefin tuna fishing area--dating back thousands of years--because the tuna run (starting right around this time of year) through the straight of Gibraltar. It's cured by salting it. I'm headed down to this area in a few days and hope to do some "research." I'll let you know if I see any other preparations--thinly sliced and drizzled with olive oil is the norm.