A proper rosero can contain a dozen or more ingredients — barley, corn, pineapple, naranjilla, cinnamon and cloves among them — making it closer to a drinkable fruit stew than a simple beverage.
Cooked barley and mote are combined with chopped fruit, spices and sugar into a thick, chilled, lightly fermented drink. Vendors in Cuenca sell cups of it especially around the Corpus Christi festival.