Division 4 However, nothing in this Regulation prevents the appropriate authority from using any power it has, in respect of regions and varieties for which it is technically justified, to authorise the enrichment of the cuvée at the place of preparation of the sparkling wines provided that:F1F2

none of the constituents of the cuvée has previously undergone enrichment;

the said constituents are derived solely from grapes harvested in its territory;

the enrichment is carried out in a single operation;

F3the enrichment does not exceed 3 % vol. for a cuvée; and

the method used is the addition of sucrose, concentrated grape must or rectified concentrated grape must.