(TheDrinksBusiness) - The Port trade’s Inter-Professional Council has restricted Port production for the second year running to dramatically reduce stocks.Yields for this year’s harvest will limit total Port production to 671,000 hectolitres, which is nearly 20% below estimated Port sales of 825,000hl for 2012. According to Paul Symington, joint managing director of Symington Family Estates, higher quality vineyards will have less of a yield reduction than the standard quality vineyards