The Tb points given to this wine are the world’s most valid and most up-to-date evaluation of the quality of the wine. Tastingbook points are formed by the Tastingbook algorithm which takes into account the wine ratings of the world's best-known professional wine critics, wine ratings by thousands of tastingbook’s professionals and users, the generally recognised vintage quality and reputation of the vineyard and winery. Wine needs at least five professional ratings to get the Tb score. Tastingbook.com is the world's largest wine information service which is an unbiased, non-commercial and free for everyone.

The vineyard is planted in 70% Merlot, 25% Cabernet Franc and 5% Cabernet Sauvignon. At around five hectares, Certan de May is a tiny jewel poised between Vieux Château Certan and Petrus. It was very strong in the 1980's, then slipped a little through the 1990's. From 2005 onwards the estate has been back on track, producing elegant yet fleshy and flamboyant wines at a very reasonable price.