evidence: Large scones may contain third of daily calories, Food Standards Agency warns 'This common snack can contain a greater number of calories than consumers may think' [...] One large scone could contain up to a third of your recommended daily calories, a new report has found. A sample of scones sold in coffee shops and cafes across Northern Ireland were examined by the Food Standards Agency (FSA) and local councils; they found that some scones contain as much as 750 calories, which is the equivalent to 10 sugar cubes.