There are a number of different orange liqueurs on the market. Two are generic styles: triple sec and curacao. Curaçao triple sec is a clear liqueur made from neutral grain (alcohol essentially) vodka that has been sweetened with sugar and flavored with orange. peelsriple sec is a clear liqueur made from neutral grain alcohol (essentially vodka) that has been sweetened with sugar and flavored with orange peels. Its name, which means “three times as dry,” refers to the triple-distillation process that was originally used.