The Balvenie Rare Marriages 30 Year Old Single Malt Scotch WhiskyFor The Balvenie Thirty, Malt Master David C. Stewart MBE marries Traditional and European oak casks that have been matured for decades in order to craft a whisky of incredible sweetness and complexity. The Balvenie Thirtys silky sweetness gives way to rich honey, mellow oaky tones and hints of candied orange peel.