Vieux Chateau Certan
Vieux Chateau Certan sits on the top of the Pomerol plateau. It’s located directly across the street from Certan de May and not far from Petrus, Lafleur or Le Pin. Le Pin is owned by a different member of the Thienpont family. Alexandre Thienpont runs Vieux Chateau Certan and manages the vineyards of Le Pin for his cousin Jacques Theinpont.
Vieux Chateau Certan is an elegant Pomerol. It’s full bodied, rich and offers ripe blackberry, plum, floral, chocolate and spice aromas.  The texture can be pure silk and velvet. The wine is effortless to drink, yet it’s complex and ages well.  The style of Vieux Chateau Certan varies depending on the vintage. Some years are better for Cabernet Franc which provides a more structured style of wine. Other vintages allow the Merlot to develop more ripeness and opulence along with a lush quality.

The 13.5 hectare Vieux Chateau Certan vineyard is located in the center of Pomerol, on the plateau. Vieux Chateau Certan has a terroir of clay and gravel soil. Vieux Chateau Certan is one of the largest vineyards in the Right Bank that are planted in one single block of vines. The Vieux Chateau Certan vineyard in total is divided into 23 separate parcels. The vineyards of Vieux Chateau Certan are planted to 65% Merlot, 30% Cabernet Franc and 5% Cabernet Sauvignon with vines that average 50 years of age. Vinification of Vieux Chateau Certan takes place in 21, traditional, temperature controlled, large, oak and stainless steel vats. Each of the varieties are vinified separately in different fermentation vessels before blending. The Merlot is vinified on average at 32 degrees Celsius. The vats range in size from 40 hectoliters, 50 hectoliters, 60 hectoliters, 77 hectoliters and all the way up to 125 hectoliters. The range of vat sizes allow for vinification on a parcel by parcel basis, as well as for each grape variety to be vinified according to its needs..... 

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With thanks to Jeff Leve from http://www.thewinecellarinsider.com, for the invaluable information