Morio Muscat (also known as Morio-Muskat) is a white wine grape that was created by viticulturalist Peter Morio at the Geilweilerhof Institute for Grape Breeding in the Palatinate in 1928. He claimed to have crossed the varieties Silvaner and Pinot Blanc, but based on the variety's properties it has been speculated that he actually crossed Silvaner and Muscat Blanc à Petits Grains. But so far this speculation has yet to be conclusively proven. The grape is highly aromatic with a "grapey" characteristic reminiscent of Muscat grape varieties. The grape is rarely used for varietal wines because it requires a high level of ripeness to avoid producing wine with a "mousey" flavor, a coarse texture and overabundance of acidity.