Optima (grape)
 Optima is a white wine grape that was created by viticulturalist Peter Morio at the Geilweilerhof Institute for Grape Breeding in the Palatinate in 1930. Morio crossed a Riesling x Silvaner cross with Müller-Thurgau. The Riesling x Silvaner is sometimes mentioned as Rieslaner but more often just as a Riesling x Silvaner.