Cava producer Cordoníu is launching a premium sparkling wine in a bid to persuade people to pay more. Cordoníu Reina Maria Cristina cava is a blend of wines from two Spanish regions and costs £17.99 a bottle. Sparkling wine posted 5.1% value growth last year [Nielsen MAT 6 September] but the industry has previously struggled to get consumers to pay more than £10.